lec 7 skull part 3.pptx
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The document summarizes the three cranial fossae located within the internal surface of the cranial cavity: 1. The anterior cranial fossa is the shallowest and formed by the frontal, ethmoid, and sphenoid bones. It supports the frontal lobes of the brain and forms the roof of the orbits. 2. The middle cranial fossa has a central sella turcica formed by the sphenoid bone and large lateral depressions on each side. It contains the optic canal and four foramina on each side of the sphenoid bone. 3. The posterior cranial fossa is the largest and deepest, lodging the cerebellum, pons, and
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The document summarizes the bones that make up the human skull and cervical vertebrae. It describes 14 cranial bones including the frontal, parietal, occipital, temporal, sphenoid, ethmoid, maxillae, zygomatic, nasal, palatine, lacrimal, vomer and mandible. It also describes the 7 cervical vertebrae, noting the atypical features of the atlas, axis and seventh cervical vertebrae, as well as the general structure of typical cervical vertebrae.
head and neck bones
This document provides an overview of osteology of the head and neck. It summarizes the bones that make up the skull, including the cranium which contains 8 paired and single bones, and the facial skeleton which contains 14 bones. It then describes several key bones in more detail, including the frontal bone with its vertical and horizontal parts forming the forehead and orbits, the ethmoid bone which forms parts of the nasal cavity, orbits and anterior cranial fossa, and the sphenoid bone which forms parts of the base of the skull, orbits and nasal cavity.
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Head and neck introduction and osteology part 1
The skull is composed of 28 bones that can be divided into two main parts: the neurocranium and viscerocranium. The neurocranium includes 14 bones that form the calvaria and enclose the brain. The viscerocranium includes 14 bones that form the facial skeleton. The bones of the skull are joined primarily by sutures, with a few synovial joints including the temporomandibular joint. The skull has several peculiarities, such as fontanelles in infants, air-filled sinuses in some bones, emissary veins connecting intracranial and extracranial veins, and its role in protecting the brain and other structures of the head and
Skull
This document discusses the anatomy of the skull by defining key terms, listing structures that pass through skull foramina, describing skull cavities, identifying skull sutures, and explaining the significance of studying skull anatomy. It defines terms like cranium, neurocranium, and suture. It lists the foramen and structures passing through them, such as the supraorbital foramen transmitting the supraorbital nerve. It describes cavities like the nasal cavity and cranial cavity. It identifies sutures like the coronal and lambdoid sutures and their connecting bones. Finally, it states that understanding skull anatomy helps with dental health.
Skull base anatomy by Dr. Aditya Tiwari
The document discusses the anatomy and embryology of the skull base. It describes the various bones that make up the skull base, including the sphenoid, occipital and temporal bones. It outlines the boundaries and contents of the different cranial fossae: anterior, middle, and posterior. It also details important anatomical structures in the skull base like the cavernous sinus, foramina, and various nerves and vessels that pass through the skull base. Comprehensive knowledge of the skull base anatomy is important for understanding pathologies and surgical planning.
SWERNY SKELETAL 2.pdf
The document provides an overview of the axial and appendicular skeleton. The axial skeleton consists of the skull, vertebral column, and rib cage. It describes the bones that make up the skull in detail. The functions of the skull are to protect the brain and sense organs. The vertebral column consists of vertebrae and provides structure, protection of the spinal cord, and allows for movement. The thoracic cage surrounds the heart and lungs and its bones provide attachment points for muscles. The appendicular skeleton includes the shoulder girdle and pelvic girdle bones that attach the arms and legs.
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Osteology of the Skull by DR. KENNEDY MUNISI, MD, MMed, MSc. PhD..pptx
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This document discusses potential complications that can occur after dental extractions and their treatment. It covers hemorrhage, pain and discomfort, edema, trismus, oroantral communications, and soft tissue injuries. The key points are:
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lec 7 skull part 3.pptx
- 1. The osteology of the Head Chapter 3 Dr. Haydar munir salih B.d.s., f.i.b.m.s.(PhD)
- 2. The internal surface of cranial cavity has three large Depressions the anterior, middle and posterior cranial fossae
- 4. Anterior cranial fossa The shallowest of the three cranial fossae The fossa is formed by the frontal bone anteriorly, the ethmoid bone in the middle, and the body and lesser wings of the sphenoid posteriorly The greater part of the fossa is formed by the orbital parts of the frontal bone, which support the frontal lobes of the brain and form the roofs of the orbits
- 6. Foramen cecum of the frontal bone
- 7. Crista galli
- 9. Cribriform plate of ethmoid
- 10. Cribriform plate of ethmoid
- 12. Middle cranial fossa The butterfly- shaped middle cranial fossa has a central part composed of the sella turcica on the body of the sphenoid and large, depressed lateral parts on each side
- 13. Sella turcica
- 14. Sella turcica
- 15. sella turcica
- 17. Optic canal (cranial view)
- 18. Optic canal (orbital view)
- 19. On each side of the body of the sphenoid, a Crescent of four foramina perforate the roots of the cerebral surfaces of the greater wings of the sphenoids : 1. Superior orbital fissure 2. Foramen rotundum 3. Foramen ovale 4. Foramen spinosum
- 20. Crescent of 4 foramina
- 26. Posterior cranial fossa The largest and deepest of the three cranial fossae, lodges the cerebellum, pons, and medulla oblongata The posterior cranial fossa is formed mostly by the occipital bone, but the dorsum sellae of the sphenoid marks its anterior boundary centrally and the petrous and mastoid parts of the temporal bones contribute its anterolateral
- 28. Clivus
- 30. Jugular foramen
- 33. Quick Review
- 34. Clinical notes