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The trigeminal nerve has three main divisions - the ophthalmic, maxillary, and mandibular nerves. It is a mixed nerve that provides both motor and sensory functions. The trigeminal ganglion contains the cell bodies of the sensory fibers of the trigeminal nerve. It gives rise to the three divisions of the trigeminal nerve which innervate the face and associated structures.
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor components. The sensory component supplies sensation to the face while the motor component innervates the muscles of mastication. It exists the skull through three divisions - ophthalmic, maxillary, and mandibular. Each division further branches to supply specific regions of the face. The trigeminal ganglion contains the cell bodies of the sensory fibers and is located in the posterior cranial fossa.
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The document discusses the trigeminal nerve (cranial nerve V) in three sentences: It describes the trigeminal nerve as the largest cranial nerve, a mixed nerve with both motor and sensory components. It originates from the trigeminal ganglion and divides into three main branches - the ophthalmic, maxillary, and mandibular nerves - which innervate the face and associated structures. The document provides detailed information on the embryology, nuclei, course and branches of the trigeminal nerve.
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1. The trigeminal nerve is the largest of the twelve cranial nerves and provides sensory innervation to the face and motor innervation to the muscles of mastication.
2. It has three major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve is sensory and innervates the eye and surrounding structures. The maxillary nerve is sensory and innervates facial structures in the cheek region. The mandibular nerve has both sensory and motor fibers that innervate the chin and lower face regions and muscles of mastication respectively.
3. Each division has numerous branches that provide detailed sensory and motor innervation to the face, oral cavity,
This document describes the anatomy and branches of the mandibular nerve (CN V3). It originates from the trigeminal ganglion and pons and exits the skull through the foramen ovale. Its main branches innervate the muscles of mastication and provide sensory innervation to the lower face and oral cavity. The anterior and posterior divisions each give off motor and sensory branches with specific distributions.
The trigeminal nerve has three main divisions - the ophthalmic, maxillary, and mandibular nerves. It is a mixed nerve that provides both motor and sensory functions. The trigeminal ganglion contains the cell bodies of the sensory fibers of the trigeminal nerve. It gives rise to the three divisions of the trigeminal nerve which innervate the face and associated structures.
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor components. The sensory component supplies sensation to the face while the motor component innervates the muscles of mastication. It exists the skull through three divisions - ophthalmic, maxillary, and mandibular. Each division further branches to supply specific regions of the face. The trigeminal ganglion contains the cell bodies of the sensory fibers and is located in the posterior cranial fossa.
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Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
The document discusses the trigeminal nerve (cranial nerve V) in three sentences: It describes the trigeminal nerve as the largest cranial nerve, a mixed nerve with both motor and sensory components. It originates from the trigeminal ganglion and divides into three main branches - the ophthalmic, maxillary, and mandibular nerves - which innervate the face and associated structures. The document provides detailed information on the embryology, nuclei, course and branches of the trigeminal nerve.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
1. The trigeminal nerve is the largest of the twelve cranial nerves and provides sensory innervation to the face and motor innervation to the muscles of mastication.
2. It has three major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve is sensory and innervates the eye and surrounding structures. The maxillary nerve is sensory and innervates facial structures in the cheek region. The mandibular nerve has both sensory and motor fibers that innervate the chin and lower face regions and muscles of mastication respectively.
3. Each division has numerous branches that provide detailed sensory and motor innervation to the face, oral cavity,
This document describes the anatomy and branches of the mandibular nerve (CN V3). It originates from the trigeminal ganglion and pons and exits the skull through the foramen ovale. Its main branches innervate the muscles of mastication and provide sensory innervation to the lower face and oral cavity. The anterior and posterior divisions each give off motor and sensory branches with specific distributions.
The trigeminal nerve is a mixed nerve that is the largest of the cranial nerves. It has both sensory and motor functions. Sensory branches provide sensation to the face and motor branches innervate the muscles of mastication. The trigeminal nerve has three major divisions - ophthalmic, maxillary, and mandibular nerves. These divisions branch further to innervate specific regions of the face. The trigeminal ganglion contains the cell bodies of pseudounipolar neurons that relay sensory information from the face to the brainstem trigeminal nuclei.
This presentation contains the detailed description about the courses, branches and supply of the Trigeminal Nerve, contains variations of maxillary nerve & Mandibular Nerve, and the detail about trigeminal Neurolgia and its managements
The trigeminal nerve is the 5th cranial nerve and is a mixed nerve responsible for sensation in the face and motor function of the muscles of mastication. It has 3 major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve provides sensory innervation to the upper face and eye region. The maxillary nerve provides sensory innervation to the mid face region including the maxillary teeth. The mandibular nerve provides sensory innervation to the lower face and motor innervation to the muscles of mastication.
The trigeminal nerve emerges from the side of the pons and has sensory and motor functions. It divides into three main branches - the ophthalmic, maxillary, and mandibular nerves. The mandibular nerve is the largest division and supplies sensation to the lower face and motor function to the muscles of mastication. It gives off several branches including the mylohyoid, lingual, and inferior alveolar nerves.
The document discusses the trigeminal nerve (CN V), which is a mixed nerve that provides sensory innervation to the face and motor innervation to the muscles of mastication. It describes the anatomy and branches of the trigeminal nerve, including its three divisions - ophthalmic, maxillary, and mandibular nerves. Key points include that the trigeminal ganglion contains the cell bodies of the sensory fibers, and the trigeminal nerve exits the skull through the trigeminal cave and foramen ovale.
The document provides information on the trigeminal nerve (CN V), including its nuclei, origin, course, branches, and functions. It describes the three main branches - ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates the eye and upper face. The maxillary nerve contains sensory fibers and innervates the midface, nasal cavity, and maxillary teeth. The mandibular nerve is mixed, containing both sensory and motor fibers, and innervates the lower face, oral cavity, external ear, and muscles of mastication.
The trigeminal nerve is the 5th cranial nerve and is a mixed nerve responsible for sensation in the face and motor function of muscles of mastication. It has 3 main divisions - the ophthalmic, maxillary, and mandibular nerves. The mandibular nerve is the largest division and supplies motor innervation to the muscles of mastication as well as sensory innervation to parts of the face and scalp.
The document discusses the trigeminal nerve (CN V), which has three main divisions - the ophthalmic, maxillary, and mandibular nerves. It describes the anatomy and branches of each division. The ophthalmic nerve is the smallest and is wholly sensory. It has three branches - the lacrimal, frontal, and nasociliary nerves. The maxillary nerve is the second division and is also wholly sensory. It has several branches including the zygomatic and posterior superior alveolar nerves. The mandibular nerve is the third and largest division and has both sensory and motor components.
This document provides an overview of the trigeminal nerve (CN V), including its embryology, structure, branches and clinical applications. It describes the three divisions of the trigeminal nerve - ophthalmic, maxillary and mandibular nerves. The trigeminal ganglion and its sensory and motor roots are discussed. The branches and functions of the ophthalmic, maxillary and mandibular nerves are summarized. Regional nerve blocks associated with the trigeminal nerve such as the greater palatine nerve block are also outlined. Anatomical variations of the trigeminal nerve and maxillary nerve are noted.
This document summarizes the trigeminal nerve, including its embryology, anatomy, branches, functions and clinical considerations. It begins with the embryology of the pharyngeal arches and how they relate to nerve development. It then describes the trigeminal ganglion, roots and nuclei. The three divisions of the trigeminal nerve and their branches are outlined. Clinical tests for examining the trigeminal nerve and classifying injuries are summarized. Common causes of trigeminal nerve injuries and their treatment approaches are briefly discussed.
The document discusses the anatomy and branches of the maxillary nerve (V2). It begins by outlining the areas innervated and ganglia associated with the nerve. It then describes the individual branches originating from the maxillary nerve in detail, including their course, distribution and innervation. These branches include the middle meningeal nerve, zygomatic nerve, pterygopalatine branches, posterior superior alveolar nerves, and others. It concludes by noting the sphenopalatine ganglion is associated with the maxillary nerve and discusses some clinical implications like trigeminal neuralgias and facial pain.
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor functions, transmitting sensations from the face and motor commands to the muscles of mastication. The trigeminal nerve consists of three main divisions - the ophthalmic, maxillary, and mandibular nerves - which each have distinct sensory distributions and ganglia. Injuries or disorders of the trigeminal nerve can result in conditions like trigeminal neuralgia, which causes severe facial pain.
Trigeminal Nerve and its applied aspectsAMBARKHAN4
The trigeminal nerve is the largest cranial nerve. It has both sensory and motor components. The sensory root relays sensory information from the face to the trigeminal ganglion, and the motor root controls muscles of mastication. The trigeminal ganglion contains cell bodies of pseudounipolar neurons. The trigeminal nerve then divides into three main branches: the ophthalmic, maxillary, and mandibular nerves. These branches provide both sensory and motor innervation to the face, scalp, and associated structures.
The document summarizes several cranial nerves and associated ganglia. It describes the Trigeminal nerve as the 5th cranial nerve that provides motor innervation to the muscles of mastication. It also outlines the three main branches of the Trigeminal nerve - the Ophthalmic, Maxillary, and Mandibular nerves. Each branch innervates different facial regions and structures such as the eyes, nose, mouth, and face. The document also briefly discusses some associated parasympathetic ganglia like the Ciliary, Pterygopalatine, and Otic ganglia.
Trigeminal nerve / orthodontic courses by Indian dental academyIndian dental academy
The document discusses the trigeminal nerve, which is the 5th cranial nerve. It has three main branches - the ophthalmic, maxillary, and mandibular nerves. Each branch innervates different parts of the face and has its own set of branches. The trigeminal ganglion contains the cell bodies of the sensory fibers of the trigeminal nerve. Common disturbances of the trigeminal nerve include trigeminal neuralgia, which causes sudden, severe facial pain, and trigeminal nerve injuries. The document provides detailed information on the anatomy and branches of the trigeminal nerve.
The trigeminal nerve (V) is the largest cranial nerve with three major divisions - the ophthalmic (V1), maxillary (V2), and mandibular (V3) nerves. The ophthalmic nerve innervates the lacrimal gland and skin of the eyelids, forehead, and nose. The maxillary nerve innervates the skin of the face and side of the nose and carries parasympathetic fibers to the lacrimal gland. The mandibular nerve has both motor and sensory components, innervating the muscles of mastication and the skin of the chin.
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor functions. It has three main divisions: the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates the eye and forehead. The maxillary nerve supplies sensation to the cheek, upper teeth, and nose. The mandibular nerve provides motor input to the muscles of mastication and sensation to the lower face, teeth, and chin.
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The trigeminal nerve is the 5th cranial nerve that has both sensory and motor functions. It has three major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic and maxillary nerves are purely sensory and innervate parts of the face, while the mandibular nerve contains both sensory and motor fibers that innervate muscles of mastication. The trigeminal ganglion contains the cell bodies of the sensory fibers and relays information to various sensory nuclei in the brainstem.
The trigeminal nerve is a mixed nerve that is the largest of the cranial nerves. It has both sensory and motor functions. Sensory branches provide sensation to the face and motor branches innervate the muscles of mastication. The trigeminal nerve has three major divisions - ophthalmic, maxillary, and mandibular nerves. These divisions branch further to innervate specific regions of the face. The trigeminal ganglion contains the cell bodies of pseudounipolar neurons that relay sensory information from the face to the brainstem trigeminal nuclei.
This presentation contains the detailed description about the courses, branches and supply of the Trigeminal Nerve, contains variations of maxillary nerve & Mandibular Nerve, and the detail about trigeminal Neurolgia and its managements
The trigeminal nerve is the 5th cranial nerve and is a mixed nerve responsible for sensation in the face and motor function of the muscles of mastication. It has 3 major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve provides sensory innervation to the upper face and eye region. The maxillary nerve provides sensory innervation to the mid face region including the maxillary teeth. The mandibular nerve provides sensory innervation to the lower face and motor innervation to the muscles of mastication.
The trigeminal nerve emerges from the side of the pons and has sensory and motor functions. It divides into three main branches - the ophthalmic, maxillary, and mandibular nerves. The mandibular nerve is the largest division and supplies sensation to the lower face and motor function to the muscles of mastication. It gives off several branches including the mylohyoid, lingual, and inferior alveolar nerves.
The document discusses the trigeminal nerve (CN V), which is a mixed nerve that provides sensory innervation to the face and motor innervation to the muscles of mastication. It describes the anatomy and branches of the trigeminal nerve, including its three divisions - ophthalmic, maxillary, and mandibular nerves. Key points include that the trigeminal ganglion contains the cell bodies of the sensory fibers, and the trigeminal nerve exits the skull through the trigeminal cave and foramen ovale.
The document provides information on the trigeminal nerve (CN V), including its nuclei, origin, course, branches, and functions. It describes the three main branches - ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates the eye and upper face. The maxillary nerve contains sensory fibers and innervates the midface, nasal cavity, and maxillary teeth. The mandibular nerve is mixed, containing both sensory and motor fibers, and innervates the lower face, oral cavity, external ear, and muscles of mastication.
The trigeminal nerve is the 5th cranial nerve and is a mixed nerve responsible for sensation in the face and motor function of muscles of mastication. It has 3 main divisions - the ophthalmic, maxillary, and mandibular nerves. The mandibular nerve is the largest division and supplies motor innervation to the muscles of mastication as well as sensory innervation to parts of the face and scalp.
The document discusses the trigeminal nerve (CN V), which has three main divisions - the ophthalmic, maxillary, and mandibular nerves. It describes the anatomy and branches of each division. The ophthalmic nerve is the smallest and is wholly sensory. It has three branches - the lacrimal, frontal, and nasociliary nerves. The maxillary nerve is the second division and is also wholly sensory. It has several branches including the zygomatic and posterior superior alveolar nerves. The mandibular nerve is the third and largest division and has both sensory and motor components.
This document provides an overview of the trigeminal nerve (CN V), including its embryology, structure, branches and clinical applications. It describes the three divisions of the trigeminal nerve - ophthalmic, maxillary and mandibular nerves. The trigeminal ganglion and its sensory and motor roots are discussed. The branches and functions of the ophthalmic, maxillary and mandibular nerves are summarized. Regional nerve blocks associated with the trigeminal nerve such as the greater palatine nerve block are also outlined. Anatomical variations of the trigeminal nerve and maxillary nerve are noted.
This document summarizes the trigeminal nerve, including its embryology, anatomy, branches, functions and clinical considerations. It begins with the embryology of the pharyngeal arches and how they relate to nerve development. It then describes the trigeminal ganglion, roots and nuclei. The three divisions of the trigeminal nerve and their branches are outlined. Clinical tests for examining the trigeminal nerve and classifying injuries are summarized. Common causes of trigeminal nerve injuries and their treatment approaches are briefly discussed.
The document discusses the anatomy and branches of the maxillary nerve (V2). It begins by outlining the areas innervated and ganglia associated with the nerve. It then describes the individual branches originating from the maxillary nerve in detail, including their course, distribution and innervation. These branches include the middle meningeal nerve, zygomatic nerve, pterygopalatine branches, posterior superior alveolar nerves, and others. It concludes by noting the sphenopalatine ganglion is associated with the maxillary nerve and discusses some clinical implications like trigeminal neuralgias and facial pain.
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor functions, transmitting sensations from the face and motor commands to the muscles of mastication. The trigeminal nerve consists of three main divisions - the ophthalmic, maxillary, and mandibular nerves - which each have distinct sensory distributions and ganglia. Injuries or disorders of the trigeminal nerve can result in conditions like trigeminal neuralgia, which causes severe facial pain.
Trigeminal Nerve and its applied aspectsAMBARKHAN4
The trigeminal nerve is the largest cranial nerve. It has both sensory and motor components. The sensory root relays sensory information from the face to the trigeminal ganglion, and the motor root controls muscles of mastication. The trigeminal ganglion contains cell bodies of pseudounipolar neurons. The trigeminal nerve then divides into three main branches: the ophthalmic, maxillary, and mandibular nerves. These branches provide both sensory and motor innervation to the face, scalp, and associated structures.
The document summarizes several cranial nerves and associated ganglia. It describes the Trigeminal nerve as the 5th cranial nerve that provides motor innervation to the muscles of mastication. It also outlines the three main branches of the Trigeminal nerve - the Ophthalmic, Maxillary, and Mandibular nerves. Each branch innervates different facial regions and structures such as the eyes, nose, mouth, and face. The document also briefly discusses some associated parasympathetic ganglia like the Ciliary, Pterygopalatine, and Otic ganglia.
Trigeminal nerve / orthodontic courses by Indian dental academyIndian dental academy
The document discusses the trigeminal nerve, which is the 5th cranial nerve. It has three main branches - the ophthalmic, maxillary, and mandibular nerves. Each branch innervates different parts of the face and has its own set of branches. The trigeminal ganglion contains the cell bodies of the sensory fibers of the trigeminal nerve. Common disturbances of the trigeminal nerve include trigeminal neuralgia, which causes sudden, severe facial pain, and trigeminal nerve injuries. The document provides detailed information on the anatomy and branches of the trigeminal nerve.
The trigeminal nerve (V) is the largest cranial nerve with three major divisions - the ophthalmic (V1), maxillary (V2), and mandibular (V3) nerves. The ophthalmic nerve innervates the lacrimal gland and skin of the eyelids, forehead, and nose. The maxillary nerve innervates the skin of the face and side of the nose and carries parasympathetic fibers to the lacrimal gland. The mandibular nerve has both motor and sensory components, innervating the muscles of mastication and the skin of the chin.
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor functions. It has three main divisions: the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates the eye and forehead. The maxillary nerve supplies sensation to the cheek, upper teeth, and nose. The mandibular nerve provides motor input to the muscles of mastication and sensation to the lower face, teeth, and chin.
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The Indian Dental Academy is the Leader in
continuing dental education , training dentists
in all aspects of dentistry and offering a wide
range of dental certified courses in different
formats.
Indian dental academy provides dental crown &
Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit
www.indiandentalacademy.com ,or call
0091-9248678078
The trigeminal nerve is the 5th cranial nerve that has both sensory and motor functions. It has three major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic and maxillary nerves are purely sensory and innervate parts of the face, while the mandibular nerve contains both sensory and motor fibers that innervate muscles of mastication. The trigeminal ganglion contains the cell bodies of the sensory fibers and relays information to various sensory nuclei in the brainstem.
Fifth cranial nerve
Have a large sensory root and a small motor root.
Motor root arises – arises from the lateral aspect of lower pons (cranially) the motor root cross the apex of the petrous temporal bone beneath the superior petrosal sinus, to enter the middle cranial fossa.
Sensory root – arises from the lateral aspect of lower pons (caudally).
RELATIONS
Medially
(a) internal carotid artery
(b) posterior part of cavernous sinus
Laterally - middle meningeal artery
Superiorly - parahippocampal gyrus
Inferiorly
motor root of trigeminal nerve
(b) greater petrosal nerve
(c) apex of the petrous temporal bone
(d) foramen lacerum.OPTHALIMIC DIVISION
Terminal branches of Ophthalmic division of trigeminal nerve, are
1. Frontal
Supratrochlear
Supraorbital
2. Nasociliary
Branch of ciliray ganglion
2-3 long ciliary nerves
Posterior ethmoidal
Infratrochlear
Anterior ethmoidal
3. Lacrimal
Branches
From main trunk
Meningeal branch
Nerve to medial pterygoid
From the anterior trunk
Sensory branch
Buccal nerve
Motor branch
Masseteric
Deep temporal nerve
Nerve to lateral pterygoid
From the posterior trunk
Auriculotemporal
Lingual
Inferior alveolar nerves
This document provides an overview of the trigeminal nerve (CN V), including its origins, branches, and functions. It notes that the trigeminal nerve has three main divisions - the ophthalmic, maxillary, and mandibular nerves. The cell bodies of the trigeminal nerve's sensory neurons are located in the trigeminal ganglion. The document then describes the individual branches and functions of the ophthalmic, maxillary, and mandibular nerves. It provides details on the sensory distributions and innervations of each branch.
This document provides an overview of the nerve supply of the maxilla and mandible. It begins with an introduction to the trigeminal nerve and its three divisions - the ophthalmic, maxillary, and mandibular nerves. It then describes the branches and distributions of the maxillary and mandibular nerves in detail. The maxillary nerve provides sensation to the midface and upper teeth while the mandibular nerve provides both motor innervation to the muscles of mastication and sensation to the lower teeth.
The document provides information about the trigeminal nerve (CN V), which is the largest of the cranial nerves. It has both sensory and motor components. The trigeminal nerve has three main divisions - the ophthalmic, maxillary, and mandibular nerves. It innervates most of the face and provides sensory innervation to the teeth and oral cavity. The trigeminal nerve nuclei are located in the pons and midbrain. The trigeminal ganglion contains the cell bodies of pseudounipolar neurons. The branches and distribution of the three divisions of the trigeminal nerve are described in detail.
The trigeminal nerve is the largest cranial nerve and contains both sensory and motor fibers. It has three major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates parts of the face, nasal cavity, and orbits. The maxillary nerve innervates parts of the face, nasal cavity, oral cavity, and maxillary sinus. The mandibular nerve is the largest division and innervates muscles of mastication and parts of the lower face. All three divisions convey sensory information from the face and motor innervation to the muscles of mastication.
The maxillary nerve originates from the trigeminal ganglion and provides sensory innervation to much of the face and upper teeth. It gives off several branches that innervate the nasal cavity, palate, gums, upper teeth, lower eyelid, upper lip and cheek. Maxillary nerve blocks are commonly used in dental procedures to anesthetize these areas by injecting local anesthetic near branches of the nerve. The document discusses the anatomy and branches of the maxillary nerve in detail.
The trigeminal nerve is the largest cranial nerve and contains both sensory and motor fibers. It has three main divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates parts of the face, scalp and eye. It gives off branches like the lacrimal, frontal, and nasociliary nerves which further branch and supply sensory innervation to various structures like the lacrimal gland, forehead skin, and nasal cavity. The maxillary and mandibular nerves also branch and supply sensory fibers to parts of the face, mouth and teeth. The trigeminal nerve is involved in proprioception and motor control of chewing muscles as well.
Trigeminal nerve maxillary nerve and clinical implicationDr Ravneet Kour
The document discusses the maxillary branch of the trigeminal nerve and its clinical implications. It begins by describing the basic anatomy of neurons, nerves and cranial nerves. It then focuses on the trigeminal nerve as the fifth cranial nerve, describing its nuclei, ganglion and three main branches - the ophthalmic, maxillary and mandibular nerves. Most of the document details the anatomy and branches of the maxillary nerve, including those in the pterygopalatine fossa, orbit, infraorbital canal and face. It concludes by discussing three clinical implications - trigeminal neuralgia, herpes zoster ophthalmicus and Wallenberg syndrome.
1. The trigeminal nerve is the largest of the cranial nerves and has three main divisions - the ophthalmic, maxillary, and mandibular nerves. It provides sensory innervation to most of the face and motor innervation to the muscles of mastication.
2. The trigeminal ganglion contains the cell bodies of the sensory fibers. It gives rise to the three divisions which have numerous branches that innervate the face, scalp, and oral cavity.
3. Clinical considerations for trigeminal nerve blocks and other procedures include risks of bleeding, infection, nerve injury, hematoma formation, and diplopia if local
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor functions. Sensory fibers carry general somatic afferent information from the face to the trigeminal ganglion. Motor fibers innervate the muscles of mastication. The trigeminal nerve emerges from the pons and divides into three main branches: the ophthalmic, maxillary, and mandibular nerves. These branches innervate different regions of the face and cranium, carrying sensory information and motor commands. Injuries or diseases of the trigeminal nerve can cause sensory deficits or neuropathic pain conditions like trigeminal neuralgia.
The trigeminal nerve is the largest cranial nerve and has three main branches - the ophthalmic, maxillary, and mandibular nerves. It arises from the semilunar ganglion and has both sensory and motor components. The ophthalmic nerve innervates the eye and forehead. The maxillary nerve innervates the midface, upper teeth, and sinuses. The mandibular nerve has both anterior and posterior divisions which innervate the lower face, scalp, ear, and lower teeth.
The document discusses the anatomy and embryology of the facial nerve. It begins with an introduction stating that the facial nerve is the seventh cranial nerve and is mixed with both motor and sensory components. It then covers the embryological development of the facial nerve from the second branchial arch. The document outlines the course of the facial nerve from its nuclei of origin in the brainstem through its intracranial, intratemporal, and extracranial segments. It details the branches and functional components of the facial nerve as well as associated ganglia. Variations and blood supply of the facial nerve are also mentioned.
The trigeminal nerve is the largest of the cranial nerves. It has both sensory and motor fibers. It has three main divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates parts of the face around the eyes. The maxillary nerve innervates parts of the face around the nose and mouth. The mandibular nerve is mixed and innervates muscles of mastication as well as parts of the face, tongue and mouth.
The document provides information about the trigeminal nerve, including its three main divisions and branches. It discusses the motor and sensory roots of the trigeminal nerve and the trigeminal ganglion. Various conditions that can affect the trigeminal nerve are summarized, such as trigeminal neuralgia, anaesthesia dolorosa, and injuries from trauma or surgery. Treatment options for some of these conditions are also briefly mentioned.
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
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This document discusses dental occlusion concepts and philosophies for complete dentures. It introduces key terms like physiologic occlusion and defines different occlusion schemes like balanced articulation and monoplane articulation. The document discusses advantages and disadvantages of using anatomic versus non-anatomic teeth for complete dentures. It also outlines requirements for maintaining denture stability, such as balanced occlusal contacts and control of horizontal forces. The goal of occlusion for complete dentures is to re-establish the homeostasis of the masticatory system disrupted by edentulism.
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This document discusses dental casting investment materials. It describes the three main types of investments - gypsum bonded, phosphate bonded, and ethyl silicate bonded investments. For gypsum bonded investments specifically, it details their classification, composition including the roles of gypsum, silica, and modifiers, setting time, normal and hygroscopic setting expansion, and thermal expansion. It provides information on how the properties of gypsum bonded investments are affected by their composition. The document serves as a comprehensive overview of dental casting investment materials.
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DECLARATION OF HELSINKI - History and principlesanaghabharat01
This SlideShare presentation provides a comprehensive overview of the Declaration of Helsinki, a foundational document outlining ethical guidelines for conducting medical research involving human subjects.
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We’re talking about Vedic Meditation, a form of meditation that has been around for at least 5,000 years. Back then, the people who lived in the Indus Valley, now known as India and Pakistan, practised meditation as a fundamental part of daily life. This knowledge that has given us yoga and Ayurveda, was known as Veda, hence the name Vedic. And though there are some written records, the practice has been passed down verbally from generation to generation.
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Mercurius is named after the roman god mercurius, the god of trade and science. The planet mercurius is named after the same god. Mercurius is sometimes called hydrargyrum, means ‘watery silver’. Its shine and colour are very similar to silver, but mercury is a fluid at room temperatures. The name quick silver is a translation of hydrargyrum, where the word quick describes its tendency to scatter away in all directions.
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Copy of trigeminal nerve.doc submisiopn
1. TRIGEMINAL NERVE
The trigeminal nerve is so called because of its three main divisions i.e.
the Optalmic, Maxillary & Mandibular nerves. It is derived from the
combination of 2 Latin words, tres meaning three+ geminus meaning
twin i.e. three born together (bilaterally)
It is the largest of the cranial nerves.
It is the fifth cranial nerve
It is a mixed nerve and is sensory to the greater part of the scalp, the
teeth, and the oral and nasal cavities. Motor supply is to the MOM.
Proprioceptive nerve fibres from the masticatory and extra-ocular
muscles.
Various nuclei associated with the fifth nerve are situated within the
pons. They are:
Motor nucleus
Sensory nucleus
Mesencephalic nucleus
Spinal nucleus
THE TRIGEMINAL GANGLION:
The trigeminal nerve is continuous with the ventral surface of
the pons near its upper border by a large sensory and a small motor root.
The ganglion occupies a recess (Trigeminal or Meckel’s cave) in the dura
mater in front of the apex of the petrous temporal bone. It lies at depth of
4.5 –5 cm from the lateral aspect of the head near the posterior part of the
zygomatic arch.
It is crescentic or semilunar in shape. Medially it is related to
I.C.A & cavernous sinus, inferiorly with the motor root and the greater
petrosal nerve & the apex of the petrous temporal bone and for.lacerum.
Blood supply to the ganglion is through the ganglionic branches
of the IC & the accesory meningeal artery which enters through the
for.ovale.
MOTOR ROOT
It arises separately from the sensory root in the motor nucleus of pons. At
the semilunar ganglion it passes inferolaterally under the ganglion
towards for.ovale, through which it leaves the middle cranial fossa along
with the man.div. After it exits the skull, it unites with the sensory root
and forms a single nerve trunk. It supplies the following muscles:
1. Muscles of mastication
2. Mylohyoid
3. Ant belly of the diagastric
2. 4. Tensor tympani
5. Tensor veli palatini
SENSORY ROOT
The fibres of the sensory root arise from the cells of the trigeminal
ganglion. The branches of the unipolar cells of the trigeminal ganglio are
divided into central and peripheral branches. The central branches leave
the concave surface to enter the pons. The peripheral branches are
grouped to form the ophthalmic and maxillary nerves and sensory part of
the mandibular nerve.
OPTHALMIC NERVE
• It is the superior division of the V nerve & is the smallest.
• It is wholly sensory.
• It has 3 branches. All 3 of them pass through the sup. orbital
fissure into the orbit. They are;
1. Lacrimal nerve: it is the smallest. It supplies the lacrimal
gland & the conjuntiva. It pieces the orbital septum and ends
in the skin of the upper eyelid.
2. Frontal nerve: it is the smallest branch& appears to be the
direct continuation of the ophthalmic division. It enters the
orbit through the SOF divides into 2 branches.
The supra orbital branch: It is larger & more laterally
placed. It supplies the skin of the forehead & scalp as far
back as the vertex. It also supplies the mucous membrane
of the frontal sinus & pericranium
The supra trochlear branch: It is smaller & more medially
placed. It curves upward on the forehead , close to the
bone. It supplies the skin of the upper eyelid & lower part
of the forehead.
Nasocilliary nerve: It is intermediate in size & runs
more deeply. Its branches are divided as following;
Branches in the: -
Orbit
Nasal cavity
On the face
Branches in the Orbit:
3. Long root of the cilliary ganglion: It is sensory &
passes through the ganglion without synapsing
andsupplies to the eyeball.
Long ciliary nerve: Supplies the Iris & Cornea.
Posterior ethmoidal nerve: It enters the post.
Ethmoidal canal & supplies to the mucous membrane
lining of the Post. Etmoidal & Sphenoidal paranasal
air cells.
Anterior ethmoidal nerve: It supplies to the Ant.
Ethmoidal & frontal paranasal air cells. In the upper
part of the nasal cavity, it further divides into: -
Internal nasal branches: It has medialseptal
branches to the septal membrane. It also has lateral
branches, which supply the nasal conchae & the
ant. nasal wall
External nasal branches: supplies the skin on the
tip & ala of the nose.
2) Branches in the nasal cavity:
The branches arising here supply the mucous
membrane of the nasal cavity.
3) Terminal branches on the face:
They supply sensory nerves to the skin of the medial
parts of the both eyelids, the lacrimal sac. They also
supply skin on the bridge of the nose.
MAXILLLARY NERVE
• This is the second & intermediate division of the trigeminal
nerve.
• It is wholly sensory.
• Course: It begins at the middle of the trigeminal ganglion as a
flattened, plexiform band, passes horizontally forwards along the
lateral wall of the cavernous sinus.
It leaves the skull through the foramen rotundum & becomes
more cylindrical & firmer in texture.
It crosses the upper part of the pterygopalatine fossa, inclines
laterally on the posterior part of the orbital process of the
maxilla & enters the orbit through the inferior orbital fissure.
4. It is now termed as the infra orbital nerve. It passes through the
infra orbital groove & canal in the floor of the orbit & appears on
the face through the infra orbital foramen.
• The branches of the maxillary nerve can be divided into the
following 4 groups:
1. In the cranium: Meningeal
2. In the pterygopalatine fossa: Ganglionic,
Zygomatic, Post.superior alveolar.
3. In the infra orbital canal: Middle sup. alveolar,
Anterior superior/ Greater alveolar
4. On the face: Palpebral, nasal,
superior labial
Meningeal branch: It is given off near the
foramen rotundum. It supplies the duramater of
the anterior & middle cranial fossae.
The ganglionic branches: They connect the
maxillary nerve to the pterygopalatine
ganglion. They contain secretomotor fibres to
the lacrimal gland. They provide sensory
fibres to the orbital periosteum & mucous
membrane of the nose, palate & pharynx.
The zygomatic nerve: It arises in the
pterygopalatine fosssa from the maxillary
nerve.the nerve then enters the zygomatic
bone & then divides into 2 branches.. The
Zygomaticofacial nerve perforates the facial
surfaces & supplies the skin over the
zygomatic bone. The Zygomaticotemporal
nerve perforates the temporal surface of the
zygomatic bone , pierces the temporalis fascia,
& supplies the skin over the anterior temporal
fossa region.
The superior alveolar(dental) nerves: They
arise from the maxillary nerve before it leaves
the pterygopalatine fossa. They are:
1) Posterior superior alveolar nerve: It
begins in the pterygopalatine fossa but
divides into 3 branches which emerge
through the pterygomaxillary fissure.2
branches enter the posterior wall of the
maxilla above the tuberosity & supply the
5. 3 molar teeth(except the mesiobuccal
root of first molar). The third branch
pierces the buccinator & supplies the
adjoining part of the gingivae & cheek
along the 3 molar teeth.
2) Middle superior alveolar nerve: It
arises from the Infra orbital nerve &
runs downwards & forwards along the
infraorbital groove along the lateral wall
of the maxillary sinus. It divides into
branches which supply the maxillary
premolars & mesiobuccal root of the first
molar teeth.
3) Anterior superior alveolar nerve: It
also arises in the infraorbital canal near
the mid point. It runs in the anterior wall
of the maxillary antrum. It runs inferiorly
& divides into the branches, which
supply the canine & incisors. A nasal
branch from this nerve, given off from
the superior dental plexus supplies the
mucous membrane of the anterior part of
the lateral wall & floor of the nasal
cavity. It ends in the nasal septum.
( The Infraorbital nerve is consisted of
the Middle & Superior alveolar dental
nerves)
The palpebral branches: They arise deep to
the orbicularis oculi.& pierce the
muscle, supplying the skin over the
lower eyelid& lateral angle of the
eye along with the
Zygomaticofacial & Facial nerves.
The nasal branches: They supply the skin of
the nose & tip of the nasal septum
& join the External nasal branch &
anterior ethmoidal nerve.
The superior labial branches: These are
large & numerous. They supply the
skin over the anterior part of the
cheek & upper lip including the
mucous membrane & labial
6. glands. They are joined by the
facial nerve & form the infraorbital
plexus.
The SphenopalatinePterygopalatine ganglion
It is the largest of the peripheral ganglia. It is associated with the
greater petrosal nerve.( it is part of the 7th cranial/facial nerve).
It acts as arelay staion bn the superior salivatory nucleus in the
pons and the lacrimal gland & mucous & serous glands of the
palate, nose & paranasal sinuses.
It lies in the pterygopalatine fossa, suspended from the maxillary
division of the trigeminal nerve by 2 roots.branches from the
maxillary nerve through its ganglionic branches. They do not
establish any sympathetic connections with its cells. The
branches are: -
1. Orbital branches: They are made up of afferent
fibres & convey sensory impulses from the
periosteum of the orbit. Others supply the
mucous membrane of the Post. Ethmoidal
& sphenoidal air cells.
2. Palatine branches: they are distributed to the roof
of the mouth, soft palate, tonsil & lining
membrane of the nasal cavity. It gives of
three branches
I. Greater palatine nerve: it emerges
from the foramen medial to the 3 rd
molar, continues forward splitting
into number of branches. It is sensory
to the mucosa of the hard palate &
palatal gingivae.
II. Middle palatine nerve: This nerve
emerges from a small foramen in the
medial aspect of the pyramidal part of
the palatine bone. Sensory supply is
to the Mucous membrane of the soft
palate.
III. Posterior palatine nerve: It emerges
from a foramen slightly lateral to the
7. median palatine nerve. It contains
sensory & secretomotor fibres to the
mucous membrane of the Tonsillar
area.
3. Nasal branches: They are divided into 2 groups: -
I. Posterior superior lateral nerves:
they supply they Posterior part of the
nasal conchae
II. Nasopalatine(Sphenopalatine)
nerve: It passes downwards &
forwards between the periosteum
&mucous membrane in the region of
the vomer, continues downwards &
forwards, reachs the floor of the nasal
cavity.
Descends into the incisal canal to
appear in the anterior part of the hard
palate & supplies the mucous
membrane of the premaxilla.
4. Pharyngeal branches: This branch supplies
sensory & secretory fibers to the
mucous membrane of the
nasopharynx, behind the opening of
the auditory tube. It arises from the
posterior part of the ganglion & passes
through the palatovaginal canal along
with the pharyngeal branch of the
maxillary artery.
MANDIBULAR NERVE
It is the third & largest division of the trigeminal nerve.it is made up of
2 roots: a large sensory root which proceeds from the lateral part of the &
semilunar ganglion & almost immediately emerges out through the
foramen ovale( of the sphenoid) & a small motor root which passes below
the ganglion, & unites with the sensory root just outside the foramen.
Immediately beyond the junction of the 2 roots, the nerve sends off the
meningeal branch & the nerve to the medial pterygoid. Now the main
trunk divides into a small anterior & a large posterior trunk.
8. As it descends from the foramen, the mandibular nerve lies at a distance
of 4 cm from the surface & a little in front of the neck of the mandible.
The various brancnes given off are as follows: -
1) Branches of the undivided nerve.
i. Meningeal branch/nervus spinosus.
ii. Nerve to the medial pterygoid
2) Branches of the divided nerve:
A) Anterior division:
i. Buccal nerve
ii. Massetric nerve
iii. Deep temporal nerve
iv. Nerve to the lateral pterygoid.
B) Posterior division:
i. Auriculotemporal nerve
ii. Lingual nerve
iii. Inferior alveolar nerve
1) Undivided nerve branches
i. Meningeal nerve:
• It enters the skull through the foramen spinosum
along with MMA.
• It has anterior & posterior divisions that supply the
dura of the middle &
ant.cranial fossae.
ii. Nerve to the medial pterygoid:
It is a slender branch that enters the deep surface of
the muscle.
It also gives 1-2 filaments to the tensor tympani &
the tensor veli
palati
muscles.
2) Divided nerve branches.
A) Anterior division: It has 1 sensory branch. i.e.
long buccal nerve &3 branches that are motor
to the massetric, deep temporal & lateral
pterygoid muscles.
i. The buccal nerve:
9. • It passes between the 2 heads of the
lateral pterygoid & descendsbeneath
or through the temporalis. It emerges
from under cover of the ramus & ant.
border of the masseter & unites with
the buccal branches of he facial
nerve.
• It supplies the skin over the ant. part
of the buccinator & mucous
membrane lining the buccal surface
of the gum.
ii. The massetric nerve:
• Passes laterally above the lateral
pterygoid in front of the TMJ &
behind the tendon of temporalis.
• It passes through the mandibular
notch to sink into the masseter.
• It also gives a branch to the joint.
iii. The deep temporal nerves:
• They are 2 in number.
• They pass above the upper head of
the lateral pterygoid, turn above
the infra temporal crest & sink into
the deep part of the temporalis.
iv. The nerve to the lateral pterygoid.
• These are also 2 in number one for
each head.
(2) Posterior division:
The posterior trunk is mostly sensory but
receives a few filaments from the
motor root.
i. The Auriculotemporal nerve:
• The auriculotemporal nerve arises
by a medial & lateral roots, that
enclircle theMMA & unite behind it
just below the foramen spinosum.
• The united nerve passes backwards,
deep to the lateral pterygoid muscle
10. & passes between the
sphenomandibular ligament & the
neck of the condyle.
• It then passes laterally behind the
TMJ I.r.t. to the upper part of the
parotid. It emerges from behind the
TMJ, ascends posterior to the
superficial temporal vessels &
crosses the posterior root of the
zygomatic arch.
Communications of the nerve:
2 roots of the nerve:- both
tghese roots receive
communications from he OTIC
ganglion. They are
postganglionic secretory fibres
to the Parotid gland.i.e they
control the secretions from the
gland
Communicating branches to the
postganglionic sympathetic
fibres:- These are vasomotor
fibres that pass to the parotid
through the auriculotemporal
nerve.
Communicating branches to the
facila nerve: These are purely
sensory from the
Auriculotemporal nerve.
Branches of the nerve:
i. Parotid branches
ii. Articular branches--- to
the TMJ.
iii. Auricular branches---to
the skin of the helix &
tragus.
iv. Meatal branches-----
Meatus of the tymphanic
membrane
11. v. Terminal branches----
Scalp over the temporal
region
Lingual nerve
This is the smaller of the 2 branches of
the posterior division,
It passes medial to the lateral pterygoid &
it lies between the ramus of the mandible
& the muscle in the pterygomandibular
space.
It gives off sensory fibresto the tonsil &
the mucous membrane of the posterior
part of the oral cavity.
In the pterygomandibular space, it lies
parallel to the inferior alveolar nerve, but
medial & anterior to it.
It then passes deep to reach the side of
the tongue. Here it lies in the lateral
lingual sulcus against the deep surface of
the mandible on the medial side of the
roots of the third molar tooth where it is
covered only by mucous membrane of
the gum.
From here it passes on to the side of the
the side of the tongue where it is crosses
the styloglossus & runs on the lateral
surface of the hyoglossus & deep to the
mylohyoid in close relation to the deep
part of the submandibular gland &its
duct.
Communication of the facial nerve
(Chorda tymphani)
As the lingual nerve passes
medially to the lateral pterygoid, it is
joined by the chorda tympani. This nerve
conveys secretory fibres from the facial
nerve. The parasympathetic secretory
fibres control the submandibular &
sublingual salivary glands.
12. Inferior alveolar nerve.
It is the largest terminal branch of
the posterior division of the mandibular nerve.
The nerve descends deeep to the lateral
pterygoid muscle 7& at the lower border
of the muscle, it passes b/n the
sphenomandibular ligament & the ramus
to enter the mandibular foramen.
In the canal the nerve runs alongside the
inferior alveolar artery.as far as the
mental foramen where it emerges out&
gives off the mental & incisive branches.
From here the nerve runs in the canal
giving of branches to the mandibular
teeth as apical fibres & enters the a[pical
foramena of the teeth to supply the pulp
mainly as well as the periodontium.
Branches of the nerve
Mental nerve: it supplies to the skin of
the chin & the mucous membrane as well
as the skin of the lower lip.
Incisive branch: continues anteriorly
from the mental nerve in the body of the
mandibleto form the incisive plexus &
supplies the canine & incisors.
Mylohyoid nerve: it is given of before the
nerve enters the canal & contains both
sensory & motor fibres.it pierces the
sphenomandibular ligament, descends in
a groove in the medial side of the ramus
& passes beneath the mylohyoid line
supplying the mylohyoid muscle as well
as the anterior belly of the digastric.
Autonomic ganglia associated with the
mandibular division
Submandibular ganglion:
It is a small ovoid body that is
suspendedfrom the lingual nerve above
the submandibulat salivary gland. The
13. preganglionic parasympathetic fibres
reach the ganglion arising from the
superior salivatory nucleus, reaching
through the facial, chorda tympani & the
lingual nerve. Post ganglionic fibres are
conveyed through the submandibular,
sublingual & anterior lingual salivary
glands.
The sensory nerves reach the
gangliothrough the lingual nerve.
Sympathetic fibres are derived from the
plexus around the facial artery & contain
post ganglionic fibres arising in the
superior cervical ganglion. They provide
secretomotor fibres to the submandibular
& sublingual galands.
Otic ganglion
It is a flattened ovoid body located on the
medial side of the undivided nerve. It is
situated below the for. ovale & the
MMA.
It has 2 main roots:-
1) Parasympathetic preganglionic
(secretory) fibres: they arise from
the inferior salivatory nucleus.the
efferent fibres pass by way if the
glossopharyngeal nerve through
the jugular canal.below the canal it
passes through the tympanic
branch of the glossopharyngeal
nerve( Jacobson’s nerve), passing
through the tympanic plexus & the
lesser petrosal branch to reach the
Ganglion.( the lesser superficial petrosal
nerve is the parasympathetic root of the
otic ganglion) the postganglionic fibres
pass through the auriculotemporal nerve.
2) Sympathetic root: It is made up of
the postganglionic fibres that have
originated in the superior cervical
14. sympathetic ganglion & the plexus
of the MMA. The fibres pass
through the ganglion uninterrupted.
These fibres reach the parotid thru
the auriculotemporal nerve.
Afferent of sensory nerves come
from the parotid through the
auriculotenporal nerve.