The cavernous sinus is located on each side of the sphenoid bone. It contains several cranial nerves and the internal carotid artery. It connects to other venous structures such as the superior and inferior petrosal sinuses and the intercavernous sinuses. Tributaries include the ophthalmic, sphenoparietal, and cerebral veins.
The cavernous sinus is located in the middle cranial fossa on either side of the body of the sphenoid bone and sella turcica. It contains the internal carotid artery and cranial nerves III, IV, V1, and VI. The cavernous sinus drains into the angular vein, pterygoid venous plexus, and intercavernous sinuses which connect the two cavernous sinuses. Clinical implications include spread of infection or thrombosis from the face into the cavernous sinus via connections to facial veins.
The cavernous sinus is a pair of venous channels located on each side of the body of the sphenoid bone in the middle cranial fossa. It is approximately 2 cm long and 1 cm wide. Several important structures pass through or are located within the cavernous sinus, including the internal carotid artery, cranial nerves III, IV, V1, and VI, and the inferior hypophyseal arteries. The cavernous sinus drains into various venous channels including the superior and inferior petrosal sinuses, which connect to the transverse sinus and internal jugular vein. Cavernous sinus thrombosis is a potential complication caused by sepsis that can spread from the face or paranasal sinuses,
The ophthalmic artery originates from the internal carotid artery as it leaves the cavernous sinus. It passes through the optic canal and orbits the eye, dividing into branches that supply the eye and surrounding structures. The central artery of the retina arises in the optic canal and supplies the retina. The lacrimal artery runs to the lacrimal gland. Other branches include the supraorbital, anterior and posterior ethmoidal, meningeal, muscular, and dorsal nasal and supratrochlear arteries which supply the surrounding areas. The ciliary arteries pierce the sclera to supply the choroid, iris, and ciliary body. The ophthalmic artery and its branches provide the main blood supply to
The submandibular gland is located beneath the lower jaw. It is roughly the size of a walnut and weighs 10-20 grams. The submandibular gland has two parts - a larger superficial part and smaller deep part. It receives blood supply from the sublingual and submental arteries and drains into the common facial and lingual veins. The gland is innervated by parasympathetic fibers from the submandibular ganglion as well as sympathetic fibers from the cervical ganglia. Obstruction of the submandibular duct can cause sialolithiasis or salivary calculi formation leading to xerostomia.
The document discusses the anatomy of the orbit, including its embryology, dimensions, boundaries, and clinical significance. It can be summarized as follows:
The orbit is a pyramid-shaped space bounded by seven bones and containing the eye. It develops from the frontal process, maxillary process, and lateral nasal process in embryology. The thin medial wall and floor are most prone to fractures. Landmarks like the lacrimal fossa and infraorbital foramen have clinical importance. Fractures of the orbit can damage surrounding structures and cause diplopia or sensory changes.
The infratemporal fossa is located below the temporal fossa. It is bounded by the ramus of the mandible laterally, the maxilla anteriorly, and the lateral pterygoid plate medially. The infratemporal fossa contains the mandibular nerve, maxillary artery, pterygoid venous plexus, and the medial and lateral pterygoid muscles. The maxillary artery passes through the infratemporal fossa and gives off several branches including the middle meningeal artery, accessory meningeal artery, inferior alveolar artery, and infraorbital artery. It communicates with surrounding areas through gaps in bones and openings in the skull.
The document provides an overview of the anatomy of the eye and orbit. It describes the seven bones that make up the bony orbit, including the frontal, zygomatic, maxillary, ethmoidal, sphenoid, lacrimal and palatine bones. It details the structures forming each wall of the orbit, such as the medial orbital wall formed by the frontal process of maxillary, lacrimal bone, orbital plate of ethmoid and lesser wing of sphenoid. Key orbital foramina and fissures transmitting nerves and vessels are also outlined, along with the blood supply and venous drainage pathways. Sinuses related to the orbit including the frontal, ethmoid, sphenoid and maxillary sinuses
Thyroid, facial and lingual artery -- Anatomy and anastomosisSarbesh Tiwari
This document describes the anatomy of the superior thyroid artery and its branches. It notes that the superior thyroid artery typically arises from the external carotid artery and supplies the thyroid gland, infrahyoid muscles, larynx and sternocleidomastoid muscle. It anastomoses with the opposite superior thyroid artery and inferior thyroid artery. The document discusses the typical course and branches of the superior thyroid artery, including the infrahyoid, sternocleidomastoid, superior and inferior laryngeal, and cricothyroid arteries. It also summarizes the anatomy of related arteries like the lingual and facial arteries.
The cavernous sinus is located in the middle cranial fossa on either side of the body of the sphenoid bone and sella turcica. It contains the internal carotid artery and cranial nerves III, IV, V1, and VI. The cavernous sinus drains into the angular vein, pterygoid venous plexus, and intercavernous sinuses which connect the two cavernous sinuses. Clinical implications include spread of infection or thrombosis from the face into the cavernous sinus via connections to facial veins.
The cavernous sinus is a pair of venous channels located on each side of the body of the sphenoid bone in the middle cranial fossa. It is approximately 2 cm long and 1 cm wide. Several important structures pass through or are located within the cavernous sinus, including the internal carotid artery, cranial nerves III, IV, V1, and VI, and the inferior hypophyseal arteries. The cavernous sinus drains into various venous channels including the superior and inferior petrosal sinuses, which connect to the transverse sinus and internal jugular vein. Cavernous sinus thrombosis is a potential complication caused by sepsis that can spread from the face or paranasal sinuses,
The ophthalmic artery originates from the internal carotid artery as it leaves the cavernous sinus. It passes through the optic canal and orbits the eye, dividing into branches that supply the eye and surrounding structures. The central artery of the retina arises in the optic canal and supplies the retina. The lacrimal artery runs to the lacrimal gland. Other branches include the supraorbital, anterior and posterior ethmoidal, meningeal, muscular, and dorsal nasal and supratrochlear arteries which supply the surrounding areas. The ciliary arteries pierce the sclera to supply the choroid, iris, and ciliary body. The ophthalmic artery and its branches provide the main blood supply to
The submandibular gland is located beneath the lower jaw. It is roughly the size of a walnut and weighs 10-20 grams. The submandibular gland has two parts - a larger superficial part and smaller deep part. It receives blood supply from the sublingual and submental arteries and drains into the common facial and lingual veins. The gland is innervated by parasympathetic fibers from the submandibular ganglion as well as sympathetic fibers from the cervical ganglia. Obstruction of the submandibular duct can cause sialolithiasis or salivary calculi formation leading to xerostomia.
The document discusses the anatomy of the orbit, including its embryology, dimensions, boundaries, and clinical significance. It can be summarized as follows:
The orbit is a pyramid-shaped space bounded by seven bones and containing the eye. It develops from the frontal process, maxillary process, and lateral nasal process in embryology. The thin medial wall and floor are most prone to fractures. Landmarks like the lacrimal fossa and infraorbital foramen have clinical importance. Fractures of the orbit can damage surrounding structures and cause diplopia or sensory changes.
The infratemporal fossa is located below the temporal fossa. It is bounded by the ramus of the mandible laterally, the maxilla anteriorly, and the lateral pterygoid plate medially. The infratemporal fossa contains the mandibular nerve, maxillary artery, pterygoid venous plexus, and the medial and lateral pterygoid muscles. The maxillary artery passes through the infratemporal fossa and gives off several branches including the middle meningeal artery, accessory meningeal artery, inferior alveolar artery, and infraorbital artery. It communicates with surrounding areas through gaps in bones and openings in the skull.
The document provides an overview of the anatomy of the eye and orbit. It describes the seven bones that make up the bony orbit, including the frontal, zygomatic, maxillary, ethmoidal, sphenoid, lacrimal and palatine bones. It details the structures forming each wall of the orbit, such as the medial orbital wall formed by the frontal process of maxillary, lacrimal bone, orbital plate of ethmoid and lesser wing of sphenoid. Key orbital foramina and fissures transmitting nerves and vessels are also outlined, along with the blood supply and venous drainage pathways. Sinuses related to the orbit including the frontal, ethmoid, sphenoid and maxillary sinuses
Thyroid, facial and lingual artery -- Anatomy and anastomosisSarbesh Tiwari
This document describes the anatomy of the superior thyroid artery and its branches. It notes that the superior thyroid artery typically arises from the external carotid artery and supplies the thyroid gland, infrahyoid muscles, larynx and sternocleidomastoid muscle. It anastomoses with the opposite superior thyroid artery and inferior thyroid artery. The document discusses the typical course and branches of the superior thyroid artery, including the infrahyoid, sternocleidomastoid, superior and inferior laryngeal, and cricothyroid arteries. It also summarizes the anatomy of related arteries like the lingual and facial arteries.
1. The document discusses the dural venous sinuses, their characteristics, classification, and the cavernous sinus in detail.
2. The dural venous sinuses drain blood from the brain and cranial cavity, absorb CSF, and receive valveless emissary veins. They are classified into unpaired and paired sinuses.
3. The cavernous sinus is a paired dural venous sinus located near the sphenoid bone. It contains the internal carotid artery and cranial nerves III and IV. Thrombosis or rupture of the cavernous sinus or internal carotid artery can cause symptoms like exophthalmos and ophthalmoplegia.
The document provides an overview of the anatomy of the paranasal sinuses, including their locations, structures, and functions. It describes the four main sinuses: maxillary, frontal, ethmoid, and sphenoid. The maxillary sinus is the largest, pyramid-shaped, and located in the cheek area. It has thin walls that can allow infections to spread. The ethmoid sinus is a complex structure located near the skull base. The frontal sinus has variable shapes and develops later in life. The sphenoid sinus is located in the skull base near important structures like the pituitary gland and optic 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.
The lacrimal apparatus consists of the lacrimal gland, lacrimal drainage system, and associated structures that produce and drain tears from the eye.
The lacrimal gland develops from surface ectoderm and is located above and lateral to the eye. Tears produced by the gland drain through puncta and canaliculi into the lacrimal sac, then through the nasolacrimal duct into the nose.
The lacrimal sac is lodged in the lacrimal fossa of the medial orbital wall. It connects to the nasolacrimal duct, which courses posteriorly and laterally through bone to drain into the nasal cavity. Coordinated blinking and pressure differences aid
The document summarizes the anatomy of the orbit. It describes the orbit as a pyramidal cavity formed by seven bones, including the frontal, zygomatic, maxillary, palatine, lacrimal, ethmoid, and sphenoid bones. The orbital contents include the eyeball, extraocular muscles, nerves, vessels, fat, and most of the lacrimal apparatus. There are several openings in the orbital walls that allow passage of nerves and vessels, including the superior and inferior orbital fissures and optic canal. The orbital fascia lines the orbital cavity.
This document provides an overview of the ciliary ganglion:
1. The ciliary ganglion is located in the posterior orbit between the lateral rectus muscle and optic nerve. It receives sensory, parasympathetic, and sympathetic nerve fibers.
2. The ganglion gives rise to short ciliary nerves that innervate the iris, ciliary body, and cornea. Damage to the ganglion or its nerves can result in tonic pupil.
3. Tonic pupil is characterized by poor constriction to light with better constriction to accommodation. It is caused by aberrant regeneration after damage to the ciliary ganglion or nerves.
The document provides information on the surgical anatomy of the orbit and its clinical importance. It discusses the bony framework of the orbit including the 7 bones that make up the structure. It describes the foramina and fissures located within the orbit including the optic canal, superior orbital fissure, inferior orbital fissure, and infraorbital groove/foramen. The document outlines the muscles, vasculature, nerves, and other structures contained within the orbit. It provides details on the clinical relevance of understanding orbital anatomy for surgical approaches and conditions like superior orbital fissure syndrome.
The document summarizes the anatomy of the orbit, eyelids, and lacrimal apparatus. It describes the nerves that pass through the superior orbital fissure to the orbit, including the oculomotor, trochlear, and abducent nerves. It also discusses the branches of the ophthalmic and lacrimal nerves, as well as the structures and relations of the eyelids, lacrimal apparatus, conjunctiva, and lacrimal gland.
The pterygopalatine fossa is a small pyramidal space located behind the maxilla and below the orbit. It contains the maxillary nerve, pterygopalatine ganglion, maxillary artery and veins. The fossa communicates with several areas through canals including the orbit, nasal cavity, infratemporal fossa and middle cranial fossa. It is an important distribution center for branches of the maxillary nerve and artery.
The facial nerve is the seventh cranial nerve that emerges from the brainstem and supplies motor innervation to the muscles of facial expression. It has three parts - a motor root, an intermedius nerve that carries taste and parasympathetic fibers, and branches that innervate the muscles of the face and neck. The facial nerve travels through the internal acoustic meatus, has three segments within the facial canal, and exits the skull through the stylomastoid foramen before branching within the parotid gland and terminating on individual facial muscles.
1. The orbit is a pyramidal cavity containing the eyeball and associated structures. It has openings for nerves, vessels and muscles. The walls are formed by several bones with thin medial wall.
2. The optic nerve passes through the optic canal to enter the orbit. Several nerves like oculomotor and abducens also pass through openings to innervate extraocular muscles.
3. The ophthalmic artery is the main artery supplying the orbit and eye. It gives off branches like lacrimal and supraorbital arteries. Veins drain via superior and inferior ophthalmic veins.
Anatomy of cavernous sinus, structures passing through the caveernous sinus, spread of infections, clinical features of cavernous sinus thrombosis, investigations and management of cavernous sinus thrombosis.
The cavernous sinus is located on each side of the body of the sphenoid bone and sella turcica between the inner and outer layers of the dura mater. It is approximately 2cm long and 1cm wide, extending from the superior orbital fissure to the apex of the petrous part of the temporal bone. Structures passing through the cavernous sinus include the internal carotid artery, cranial nerves III, IV, V1, and VI. The two cavernous sinuses are connected by intercavernous sinuses located anteriorly and posteriorly around the diaphragma sellae, allowing for reversible blood flow between the sinuses.
The document discusses the facial nerve (cranial nerve VII) in three sentences:
It originates in the brainstem and is a mixed nerve that controls facial muscle movement and taste sensation. It exits the skull through the stylomastoid foramen and gives off several branches as it passes through the parotid gland to innervate facial muscles. Disorders of the facial nerve can occur from various causes such as trauma, infections like Bell's palsy, or tumors and result in paralysis of the muscles on the same side of the face.
The submandibular gland is a major salivary gland located in the submandibular region under the mandible. It develops from endodermal buds in the floor of the mouth and grows posteriorly lateral to the tongue. The gland has both superficial and deep parts divided by the mylohyoid muscle. It is a branched tubuloacinar gland composed of serous and mucous acini that secrete saliva. The submandibular gland duct, called Wharton's duct, emerges from the deep part of the gland and opens on the floor of the mouth. The gland is supplied by the facial artery and drains into submandibular lymph nodes.
The parotid gland is the largest major salivary gland. It is located below and in front of the external ear. The parotid gland develops early in the fourth week of prenatal development. It has multiple surfaces and borders that relate to surrounding structures like the mandible, masseter muscle, and facial nerve which branches within the gland. The parotid gland secretes saliva through the parotid duct which travels anteriorly to open in the mouth. It receives nerve supply from both the parasympathetic and sympathetic nervous systems. Lymph from the gland drains to local and deep cervical lymph nodes.
The document describes the common carotid artery and its branches. It discusses the course and relations of the common carotid artery as it divides into the external and internal carotid arteries. It then focuses on the internal carotid artery, describing its course through the neck and skull. It outlines the branches and distributions of the external carotid artery.
The posterior belly of the digastric muscle originates from the mastoid notch of the temporal bone and inserts on the intermediate tendon which connects to the hyoid bone. It has relationships superiorly with the external carotid artery branches and inferiorly with the internal carotid artery, internal jugular vein and cranial nerves IX, X, XI, XII. The posterior belly is supplied by the posterior auricular and occipital arteries and innervated by the facial nerve.
The parotid gland is the largest salivary gland. It is wedge-shaped and located below the ear, between the ramus of the mandible and sternocleidomastoid muscle. The parotid gland has three surfaces - lateral, anteromedial, and posteromedial. It is divided into superficial and deep lobes by the facial nerve branching through it. The gland has relations superiorly to the skin, fascia and branches of the great auricular nerve. Inferiorly it relates to the masseter, medial pterygoid and ramus. The facial nerve and its branches pass through the substance of the gland. Lymph drains from the parotid via preauricular
This document describes the anatomy of the palatine tonsils. It discusses that there are two almond-shaped masses of lymphoid tissue located in the tonsillar fossa between the anterior and posterior pillars of the fauces. The tonsils fight microorganisms and guard the oral cavity. They are supplied by blood vessels and nerves and drain into lymph nodes in the neck.
1. The document discusses the dural venous sinuses, their characteristics, classification, and the cavernous sinus in detail.
2. The dural venous sinuses drain blood from the brain and cranial cavity, absorb CSF, and receive valveless emissary veins. They are classified into unpaired and paired sinuses.
3. The cavernous sinus is a paired dural venous sinus located near the sphenoid bone. It contains the internal carotid artery and cranial nerves III and IV. Thrombosis or rupture of the cavernous sinus or internal carotid artery can cause symptoms like exophthalmos and ophthalmoplegia.
The document provides an overview of the anatomy of the paranasal sinuses, including their locations, structures, and functions. It describes the four main sinuses: maxillary, frontal, ethmoid, and sphenoid. The maxillary sinus is the largest, pyramid-shaped, and located in the cheek area. It has thin walls that can allow infections to spread. The ethmoid sinus is a complex structure located near the skull base. The frontal sinus has variable shapes and develops later in life. The sphenoid sinus is located in the skull base near important structures like the pituitary gland and optic 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.
The lacrimal apparatus consists of the lacrimal gland, lacrimal drainage system, and associated structures that produce and drain tears from the eye.
The lacrimal gland develops from surface ectoderm and is located above and lateral to the eye. Tears produced by the gland drain through puncta and canaliculi into the lacrimal sac, then through the nasolacrimal duct into the nose.
The lacrimal sac is lodged in the lacrimal fossa of the medial orbital wall. It connects to the nasolacrimal duct, which courses posteriorly and laterally through bone to drain into the nasal cavity. Coordinated blinking and pressure differences aid
The document summarizes the anatomy of the orbit. It describes the orbit as a pyramidal cavity formed by seven bones, including the frontal, zygomatic, maxillary, palatine, lacrimal, ethmoid, and sphenoid bones. The orbital contents include the eyeball, extraocular muscles, nerves, vessels, fat, and most of the lacrimal apparatus. There are several openings in the orbital walls that allow passage of nerves and vessels, including the superior and inferior orbital fissures and optic canal. The orbital fascia lines the orbital cavity.
This document provides an overview of the ciliary ganglion:
1. The ciliary ganglion is located in the posterior orbit between the lateral rectus muscle and optic nerve. It receives sensory, parasympathetic, and sympathetic nerve fibers.
2. The ganglion gives rise to short ciliary nerves that innervate the iris, ciliary body, and cornea. Damage to the ganglion or its nerves can result in tonic pupil.
3. Tonic pupil is characterized by poor constriction to light with better constriction to accommodation. It is caused by aberrant regeneration after damage to the ciliary ganglion or nerves.
The document provides information on the surgical anatomy of the orbit and its clinical importance. It discusses the bony framework of the orbit including the 7 bones that make up the structure. It describes the foramina and fissures located within the orbit including the optic canal, superior orbital fissure, inferior orbital fissure, and infraorbital groove/foramen. The document outlines the muscles, vasculature, nerves, and other structures contained within the orbit. It provides details on the clinical relevance of understanding orbital anatomy for surgical approaches and conditions like superior orbital fissure syndrome.
The document summarizes the anatomy of the orbit, eyelids, and lacrimal apparatus. It describes the nerves that pass through the superior orbital fissure to the orbit, including the oculomotor, trochlear, and abducent nerves. It also discusses the branches of the ophthalmic and lacrimal nerves, as well as the structures and relations of the eyelids, lacrimal apparatus, conjunctiva, and lacrimal gland.
The pterygopalatine fossa is a small pyramidal space located behind the maxilla and below the orbit. It contains the maxillary nerve, pterygopalatine ganglion, maxillary artery and veins. The fossa communicates with several areas through canals including the orbit, nasal cavity, infratemporal fossa and middle cranial fossa. It is an important distribution center for branches of the maxillary nerve and artery.
The facial nerve is the seventh cranial nerve that emerges from the brainstem and supplies motor innervation to the muscles of facial expression. It has three parts - a motor root, an intermedius nerve that carries taste and parasympathetic fibers, and branches that innervate the muscles of the face and neck. The facial nerve travels through the internal acoustic meatus, has three segments within the facial canal, and exits the skull through the stylomastoid foramen before branching within the parotid gland and terminating on individual facial muscles.
1. The orbit is a pyramidal cavity containing the eyeball and associated structures. It has openings for nerves, vessels and muscles. The walls are formed by several bones with thin medial wall.
2. The optic nerve passes through the optic canal to enter the orbit. Several nerves like oculomotor and abducens also pass through openings to innervate extraocular muscles.
3. The ophthalmic artery is the main artery supplying the orbit and eye. It gives off branches like lacrimal and supraorbital arteries. Veins drain via superior and inferior ophthalmic veins.
Anatomy of cavernous sinus, structures passing through the caveernous sinus, spread of infections, clinical features of cavernous sinus thrombosis, investigations and management of cavernous sinus thrombosis.
The cavernous sinus is located on each side of the body of the sphenoid bone and sella turcica between the inner and outer layers of the dura mater. It is approximately 2cm long and 1cm wide, extending from the superior orbital fissure to the apex of the petrous part of the temporal bone. Structures passing through the cavernous sinus include the internal carotid artery, cranial nerves III, IV, V1, and VI. The two cavernous sinuses are connected by intercavernous sinuses located anteriorly and posteriorly around the diaphragma sellae, allowing for reversible blood flow between the sinuses.
The document discusses the facial nerve (cranial nerve VII) in three sentences:
It originates in the brainstem and is a mixed nerve that controls facial muscle movement and taste sensation. It exits the skull through the stylomastoid foramen and gives off several branches as it passes through the parotid gland to innervate facial muscles. Disorders of the facial nerve can occur from various causes such as trauma, infections like Bell's palsy, or tumors and result in paralysis of the muscles on the same side of the face.
The submandibular gland is a major salivary gland located in the submandibular region under the mandible. It develops from endodermal buds in the floor of the mouth and grows posteriorly lateral to the tongue. The gland has both superficial and deep parts divided by the mylohyoid muscle. It is a branched tubuloacinar gland composed of serous and mucous acini that secrete saliva. The submandibular gland duct, called Wharton's duct, emerges from the deep part of the gland and opens on the floor of the mouth. The gland is supplied by the facial artery and drains into submandibular lymph nodes.
The parotid gland is the largest major salivary gland. It is located below and in front of the external ear. The parotid gland develops early in the fourth week of prenatal development. It has multiple surfaces and borders that relate to surrounding structures like the mandible, masseter muscle, and facial nerve which branches within the gland. The parotid gland secretes saliva through the parotid duct which travels anteriorly to open in the mouth. It receives nerve supply from both the parasympathetic and sympathetic nervous systems. Lymph from the gland drains to local and deep cervical lymph nodes.
The document describes the common carotid artery and its branches. It discusses the course and relations of the common carotid artery as it divides into the external and internal carotid arteries. It then focuses on the internal carotid artery, describing its course through the neck and skull. It outlines the branches and distributions of the external carotid artery.
The posterior belly of the digastric muscle originates from the mastoid notch of the temporal bone and inserts on the intermediate tendon which connects to the hyoid bone. It has relationships superiorly with the external carotid artery branches and inferiorly with the internal carotid artery, internal jugular vein and cranial nerves IX, X, XI, XII. The posterior belly is supplied by the posterior auricular and occipital arteries and innervated by the facial nerve.
The parotid gland is the largest salivary gland. It is wedge-shaped and located below the ear, between the ramus of the mandible and sternocleidomastoid muscle. The parotid gland has three surfaces - lateral, anteromedial, and posteromedial. It is divided into superficial and deep lobes by the facial nerve branching through it. The gland has relations superiorly to the skin, fascia and branches of the great auricular nerve. Inferiorly it relates to the masseter, medial pterygoid and ramus. The facial nerve and its branches pass through the substance of the gland. Lymph drains from the parotid via preauricular
This document describes the anatomy of the palatine tonsils. It discusses that there are two almond-shaped masses of lymphoid tissue located in the tonsillar fossa between the anterior and posterior pillars of the fauces. The tonsils fight microorganisms and guard the oral cavity. They are supplied by blood vessels and nerves and drain into lymph nodes in the neck.
The tongue develops from swellings that arise in the first, third, and fourth pharyngeal arches. The anterior two-thirds is derived from the first arch and the posterior one-third from the third and fourth arches. The muscles develop from occipital somites and are innervated by the hypoglossal nerve. The development results in the anterior two-thirds receiving sensory innervation from the trigeminal nerve and the posterior part from the glossopharyngeal nerve. Congenital anomalies can occur if development is incomplete, such as ankyloglossia from failure of the alveolar ridge to separate the tongue.
The document discusses the development of the face from the 4th week of embryonic development. It describes how the face develops from three prominences - the frontonasal process and right and left maxillary and mandibular processes. It provides details on how various structures are formed from the fusion and development of these prominences, including the upper lip, lower lip, cheek, nose, palate and muscles of the face. The document also briefly discusses some common developmental anomalies of the face like cleft lip and cleft palate.
This document provides an introduction to anatomy by defining key terms and concepts. It discusses the different disciplines of anatomy, including macroscopic, microscopic, developmental, and neuroanatomy. It also describes the anatomical position, anatomical planes, and terms used to describe directions in the body. The document outlines the major components of the skeletal system, including different bone types. It provides examples of bone markings and functions. Finally, it introduces the different types of cartilage in the body.
questions for peroidic examination (thorax) december 2011Dr. Noura El Tahawy
This document lists 15 anatomical structures and their locations or branches to be enumerated, including the branches of the right and left coronary arteries, relations of the aortic arch, branches of the descending thoracic aorta, blood supply of the lungs, location and tributaries of the coronary sinus, boundaries and contents of the superior, posterior and middle mediastinum, structures passing through the hilum of the lung, relations of the mediastinal surface of the right and left lung, roots and distribution of the phrenic nerve, branches of the internal mammary artery, branches of the typical intercostal nerve, contents and boundaries of superior thoracic aperture, and structures a needle would pass through if inserted into the pleural cavity at the
This document contains questions from several lectures related to thoracic anatomy:
1. Questions cover the anatomy of structures like the thoracic outlet, internal thoracic artery, intercostal arteries and veins, muscles of respiration, lungs and pleura, heart, mediastinum, large blood vessels, nerves of the thorax, esophagus, and azygos system.
2. The questions test knowledge of the origins, courses, relations, branches and clinical importance of these various thoracic structures.
3. Incomplete statements about the anatomy are also included to be filled in, relating to topics like the root of the lung, bronchial and pulmonary arterial supply, coronary arterial distribution, and veins drain
This document provides an overview of the anatomy of the heart. It describes the layers of the pericardium and orientation of the heart within the thorax. It details the internal and external structures of the right and left atria, right and left ventricles, valves, arteries and veins. It discusses the cardiac skeleton, conduction system, and radiographic appearance of the heart. The document contains multiple diagrams labeling the features described in the text.
This document contains a series of questions from Dr. Noura El Tahawy about the anatomy of the thorax. The questions cover topics such as the anatomy of the thoracic outlet, thoracic outlet syndrome, cervical rib syndrome, structures of the thoracic cavity at T4/T5, muscles of respiration, the internal thoracic artery, intercostal arteries and veins, the diaphragm, lungs, pleura, and broncho-pulmonary segments. The questions are in a fill-in-the-blank or short answer format and seem to be reviewing content from several lectures on the thoracic wall, diaphragm, lungs, and pleura.
This document provides an overview of lung and pleural anatomy from Dr. Noura El Tahawy. It discusses the structure and layers of the pleura, noting that the pleural cavities are lined by mesothelial membranes and contain the lungs. Each lung remains attached to the mediastinum at the root, which contains the airways, blood vessels, lymphatics and nerves. The document also reviews the surfaces and borders of the lungs, the root and hilum structures, the bronchial tree and segments, vasculature, innervation and lymphatic drainage of the lungs.
This document provides an overview of the diaphragm. It discusses that the diaphragm is the main muscle of respiration that separates the chest cavity from the abdominal cavity. The diaphragm has a dome shape with a peripheral muscular part and a central tendon. It originates from the xiphoid process, lower six ribs, and vertebral columns. The diaphragm inserts into a central tendon that is fused to the pericardium. It is the most important muscle for breathing movements.
The document contains questions from a lecture about the thoracic wall, diaphragm, and related anatomy. It asks the student to identify muscles involved in respiration and their actions, describe the anatomy of the internal thoracic artery, and complete statements about thoracic structures including intercostal arteries, veins and nerves, as well as the openings and innervation of the diaphragm. The questions cover a wide range of topics relating to the thoracic cavity and diaphragm.
محاضرة دكتورة نورا الطحاوى للفرقة الاولى كلية الطب البشرى
يوم الاحد 17 ابريل 2011س
Lectures of Anatomy by Dr. Noura El Tahawy for first year Faculty of Medicine, El Minia University. 17-4-211
م
The document discusses the anatomy of the cranial cavity. It describes the dura mater folds including the falx cerebri, falx cerebelli, tentorium cerebelli, and diaphragma sellae. It also discusses the dural venous sinuses, cranial nerves, bones that make up the cranial cavity, arteries that supply the dura mater, and veins within the cranial cavity.
The pituitary gland is a pea-sized gland located at the base of the brain. It is surrounded by structures like the sphenoid bone, cavernous sinuses, and dural layers. The pituitary gland has two lobes - the anterior lobe which produces hormones, and the posterior lobe which stores hormones. It receives blood from the superior and inferior hypophyseal arteries.
This document summarizes key aspects of head and neck anatomy as presented by Dr. Noura El Tahawy. It describes the different planes and views of the skull, including the frontal, lateral, occipital and vertical views. It also discusses the paranasal sinuses, mandible, and radiographic views of the skull. Finally, it outlines several differences between the neonatal skull and adult skull, such as fontanelles, tympanic bone structure, lack of mastoid processes and mandibular shape in neonates.
The document discusses the blood supply of the brain. It begins by describing the two pairs of arteries that supply the brain - the vertebral and internal carotid arteries. These arteries are interconnected to form the circle of Willis at the base of the brain. The vertebrobasilar system arises from the vertebral arteries and forms the basilar artery, which divides into the posterior cerebral arteries. The internal carotid system gives rise to the anterior and middle cerebral arteries. These arteries and their branches supply different regions of the brain. The circle of Willis provides an important anastomosis between the two systems to ensure adequate blood flow to the brain.
The cerebellum coordinates movement and maintains balance and posture. It is divided into three lobes and receives sensory input from the spinal cord, brainstem, and cerebral cortex. The cerebellum influences movement through three functional divisions - the archicerebellum maintains balance, the paleocerebellum coordinates muscle tone and posture, and the neocerebellum coordinates skilled voluntary movements. The cerebellum communicates with other brain regions through its three pairs of cerebellar peduncles which transmit afferent and efferent signals.
The fourth ventricle is located ventral to the cerebellum and dorsal to the pons and medulla. It is bounded laterally by the gracile and cuneate tubercles and inferior cerebellar peduncles, and superiorly by the superior cerebellar peduncle. Its roof is formed by the superior cerebellar peduncle and medullary velum. Its floor contains landmarks like the median sulcus, facial colliculus, and hypoglossal triangle. Cerebrospinal fluid circulates from the fourth ventricle through the median aperture and exits into the subarachnoid space through the foramina of Luschka and Magendi.
Gene therapy can be broadly defined as the transfer of genetic material to cure a disease or at least to improve the clinical status of a patient.
One of the basic concepts of gene therapy is to transform viruses into genetic shuttles, which will deliver the gene of interest into the target cells.
Safe methods have been devised to do this, using several viral and non-viral vectors.
In the future, this technique may allow doctors to treat a disorder by inserting a gene into a patient's cells instead of using drugs or surgery.
The biggest hurdle faced by medical research in gene therapy is the availability of effective gene-carrying vectors that meet all of the following criteria:
Protection of transgene or genetic cargo from degradative action of systemic and endonucleases,
Delivery of genetic material to the target site, i.e., either cell cytoplasm or nucleus,
Low potential of triggering unwanted immune responses or genotoxicity,
Economical and feasible availability for patients .
Viruses are naturally evolved vehicles that efficiently transfer their genes into host cells.
Choice of viral vector is dependent on gene transfer efficiency, capacity to carry foreign genes, toxicity, stability, immune responses towards viral antigens and potential viral recombination.
There are a wide variety of vectors used to deliver DNA or oligo nucleotides into mammalian cells, either in vitro or in vivo.
The most common vector system based on retroviruses, adenoviruses, herpes simplex viruses, adeno associated viruses.
Computer in pharmaceutical research and development-Mpharm(Pharmaceutics)MuskanShingari
Statistics- Statistics is the science of collecting, organizing, presenting, analyzing and interpreting numerical data to assist in making more effective decisions.
A statistics is a measure which is used to estimate the population parameter
Parameters-It is used to describe the properties of an entire population.
Examples-Measures of central tendency Dispersion, Variance, Standard Deviation (SD), Absolute Error, Mean Absolute Error (MAE), Eigen Value
Discover the benefits of homeopathic medicine for irregular periods with our guide on 5 common remedies. Learn how these natural treatments can help regulate menstrual cycles and improve overall menstrual health.
Visit Us: https://drdeepikashomeopathy.com/service/irregular-periods-treatment/
- Video recording of this lecture in English language: https://youtu.be/RvdYsTzgQq8
- Video recording of this lecture in Arabic language: https://youtu.be/ECILGWtgZko
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
TEST BANK For Brunner and Suddarth's Textbook of Medical-Surgical Nursing, 14...Donc Test
TEST BANK For Brunner and Suddarth's Textbook of Medical-Surgical Nursing, 14th Edition (Hinkle, 2017) Verified Chapter's 1 - 73 Complete.pdf
TEST BANK For Brunner and Suddarth's Textbook of Medical-Surgical Nursing, 14th Edition (Hinkle, 2017) Verified Chapter's 1 - 73 Complete.pdf
TEST BANK For Brunner and Suddarth's Textbook of Medical-Surgical Nursing, 14th Edition (Hinkle, 2017) Verified Chapter's 1 - 73 Complete.pdf
Pictorial and detailed description of patellar instability with sign and symptoms and how to diagnose , what investigations you should go with and how to approach with treatment options . I have presented this slide in my 2nd year junior residency in orthopedics at LLRM medical college Meerut and got good reviews for it
After getting it read you will definitely understand the topic.
Congestive Heart failure is caused by low cardiac output and high sympathetic discharge. Diuretics reduce preload, ACE inhibitors lower afterload, beta blockers reduce sympathetic activity, and digitalis has inotropic effects. Newer medications target vasodilation and myosin activation to improve heart efficiency while lowering energy requirements. Combination therapy, following an assessment of cardiac function and volume status, is the most effective strategy to heart failure care.
Osvaldo Bernardo Muchanga-GASTROINTESTINAL INFECTIONS AND GASTRITIS-2024.pdfOsvaldo Bernardo Muchanga
GASTROINTESTINAL INFECTIONS AND GASTRITIS
Osvaldo Bernardo Muchanga
Gastrointestinal Infections
GASTROINTESTINAL INFECTIONS result from the ingestion of pathogens that cause infections at the level of this tract, generally being transmitted by food, water and hands contaminated by microorganisms such as E. coli, Salmonella, Shigella, Vibrio cholerae, Campylobacter, Staphylococcus, Rotavirus among others that are generally contained in feces, thus configuring a FECAL-ORAL type of transmission.
Among the factors that lead to the occurrence of gastrointestinal infections are the hygienic and sanitary deficiencies that characterize our markets and other places where raw or cooked food is sold, poor environmental sanitation in communities, deficiencies in water treatment (or in the process of its plumbing), risky hygienic-sanitary habits (not washing hands after major and/or minor needs), among others.
These are generally consequences (signs and symptoms) resulting from gastrointestinal infections: diarrhea, vomiting, fever and malaise, among others.
The treatment consists of replacing lost liquids and electrolytes (drinking drinking water and other recommended liquids, including consumption of juicy fruits such as papayas, apples, pears, among others that contain water in their composition).
To prevent this, it is necessary to promote health education, improve the hygienic-sanitary conditions of markets and communities in general as a way of promoting, preserving and prolonging PUBLIC HEALTH.
Gastritis and Gastric Health
Gastric Health is one of the most relevant concerns in human health, with gastrointestinal infections being among the main illnesses that affect humans.
Among gastric problems, we have GASTRITIS AND GASTRIC ULCERS as the main public health problems. Gastritis and gastric ulcers normally result from inflammation and corrosion of the walls of the stomach (gastric mucosa) and are generally associated (caused) by the bacterium Helicobacter pylor, which, according to the literature, this bacterium settles on these walls (of the stomach) and starts to release urease that ends up altering the normal pH of the stomach (acid), which leads to inflammation and corrosion of the mucous membranes and consequent gastritis or ulcers, respectively.
In addition to bacterial infections, gastritis and gastric ulcers are associated with several factors, with emphasis on prolonged fasting, chemical substances including drugs, alcohol, foods with strong seasonings including chilli, which ends up causing inflammation of the stomach walls and/or corrosion. of the same, resulting in the appearance of wounds and consequent gastritis or ulcers, respectively.
Among patients with gastritis and/or ulcers, one of the dilemmas is associated with the foods to consume in order to minimize the sensation of pain and discomfort.
2. Position & Extension
-on the side of the body of sphenoid,
-extending from the apex of the petrous temporal bone (behind)
to the medial end of the superior orbital fissure (in front).
-Each sinus is 2 cm long and 1 cm wide,
6. * Medially:
• Sphenoidal air sinus.
• Hypophysis cerebri.
* Laterally:
• Trigeminal ganglion.
• Uncus of the temporal lobe.
* Nerves in its lateral wall: (from above downwards)
• Oculomotor nerve.
• Trochlear nerve.
• Ophthalmic division of trigeminal nerve.
• Maxillary division of trigeminal nerve.
* Structures within its cavity.
• Internal carotid artery.
• Abducent nerve (on the lateral side of the artery).
• -carotid sympathetic plexus
• N.B.: The internal carotid artery may rupture inside the cavernous sinus due to
fracture base of the skull. This results in a pulsating swelling behind the orbit.
10. Cavernous Sinuses
Optic Chiasma
Internal Carotid Artery
Uncus
of Pituitary
Sphenoidal Temporal Lobe Gland
Air Sinus
Sphenoidal
AirSinuses
Body
of
Sphenoid Bone
11. Medial end of
The superior orbital fissure
Uncus
Optic Chaisma
Temporal lobe
Apex of petrous
Trigeminal Ganglion
12. Content of the Cavernous Sinuses
Occulomotor Nerve
Trochlear Nerve
Ophthalmic Nerve
Maxillary Nerve
Internal carotid Artery
Abducent Nerve with
Sympathetic Plexus
14. Anteriorly:
• Ophthalmic veins (connect it with the facial vein in the face).
• Sphenoparietal sinus.
Posteriorly:
• Superior petrosal sinus (connects it with the transverse sinus).
• Inferior petrosal sinus (connects it with the internal jugular vein).
Medially:
• Anterior and posterior intercavernous sinuses (connect the 2cavernous sinuses together).
Superiorly:
• Superficial middle cerebral vein (from the lateral surface of the
• brain).
• Cerebral veins from the inferior surface of the brain.
Inferiorly:
• Emissary vein through the carotid canal (connects it with the internal jugular vein).
• Emissary vein through the foramen ovale (connects it with the pterygoid plexus of
veins).
15. Superior and inferior
Ophthalmic veins
Plexus of emissary veins through
carotid canal to internal jugular vein
inferior
Petrosal sinus
18. In
fe Ce
rio
Cerebral vein
nt
ro th ral
Superficial middle
Su
pe ph e ve
th re in
Sphenoparietal sinus
r io al tin o
ro m a f
ph ic
th ve
al in
m
Su ic
pe ve
r io in
ro
ph
th
Ri
al
g
m
veins
In
ht
fe ic
sinus
rio ve
Ca
in
Inferior cerebral
ro
ve
ph
rn
Superior petrosal
th
al
ou
m
s
ic
S
Ce ve
in
inu
nt
s
th ral v
e
re ein
tin o
a f
Le
f
In
tC
In f
a
te er
ior
ve
rc
rn
sin ave sin pet
ou
us rn us r os
es ou a l
s
sS
inu
s
In
f er
ior
sin pet
us r os
a l
veins
Sphenoparietal sinus
Su
pe
Inferior cerebral
rio
Cerebral vein
si r p
nu et
Superficial middle
s ros
al
20. s
i nu
S
s
n ou
r
ve
Ca
ht
Rig us
S in
s
ou
e rn
av
tC
Lef
Foramen Vesalius
Foramen Ovale
Foramen Lacerum
Pharyngeal Pterygoid
Plexus Plexus
21. 8- Inferior Petrosal Sinus
s
i nu
S
s
n ou
r
ve
Ca
ht
Rig us
S in
s
ou
e rn
av
tC
Lef
Foramen Vesalius
Foramen Ovale
1- Superior Ophthalmic Vein Foramen Lacerum
2- Inferior Ophthalmic Vein
3- Sphenoparietal sinus
4- Anterior Facial Vein Pharyngeal Pterygoid
Plexus Plexus
24. -The flow of blood in all the tributaries and communications of the
cavernous sinus is reversible because they possess no valves.
-Spread of infection to the cavernous sinus leads to its thrombosis.
-The cavernous sinus communicates with the veins draining the
middle area of the face (dangerous area of the face) through 2
routes:
1-Superior ophthalmic vein.
2-Deep facial vein, pterygoid plexus of veins and emissary vein
through the foramen ovale.
26. If the cavernous sinus is thrombosed what are the important structures that
may be affected??
Q. What is the clinical picture of CST ?
• A. Clinical features of CST
• General features of infection: fever, rigors, malaise, and sever frontal and orbital headache.
• Unilateral exophthalmos and tender eye ball
• Oedema of the eyelid and chemosis of the conjunctiva (due to obstruction of the superior and inferior ophthalmic veins).
• Third, fourth, sixth cranial nerves and ophthalmic and maxillary divisions of the fifth cranial nerve may be affected
(paralysis or paresis):
• * Clinical picture of oculomotor paralysis:
– External ophthalmoplegia: Paralysis of movements of the affected eye (upward, downward and medial). Ptosis: due
to paralysis of the levator palpebrae superioris. Slight exophthalmos.
– Internal ophthalmoplegia: Dilated fixed pupil with loss of accommodation reflex. (due to paralysis of the sphincter
papillae and cilliary muscles).
• *Paralysis of abducent nerve: Paralysis of outward movement of the affected eye.( due to paralysis of lateral rectus
muscle)
• * Paralysis of trochlear nerve: Paralysis of outward and downward movement of the affected eye. (due to paralysis of
superior oblique muscle)
• * Anesthesia in the distribution of ophthalmic division of the trigeminal nerve, decreased or absent corneal reflex and
possibly anesthesia in the maxillary branch distribution.
• 5 . Infection can spread to the contralateral cavernous sinus within 24–48 hr of initial presentation. The earliest feature of
such spread is affection of the abducent nerve (6 th cranial nerve) on the opposite side (paralysis of outward movement of the
affected eye).