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16 Cards in this Set
- Front
- Back
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Sphenoid bone |
Bat-shaped bone forming the anterior plateau of the middle cranial fossa across the width of the skull (key-stone of cranium)
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Greater Wings
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"* Portion of sphenoid seen exteriorly anterior to the temporal * Forms part of the eye orbital"
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Lesser Wings
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* Bat-shaped portions of the sphenoid anterior to the sella turcica
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Sella Turcica
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"* ""Turkish saddle"" on the superior surface ""seat"" is called the hypophyseal fossa and covers the pituitary gland"
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Optic Canal
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"* Canal that the optic nerves passes from eye to brain (Cranial nerve II) * Through the bases of the lesser wings"
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Foramen Ovale
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"* Opening inferior to the sella turcica * Allows passage of a branch of Cranial nerve V"
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Foramen spinosum
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"* Lateral to the Foramen oval * Middle Meningeal Artery passes through here"
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Foramen rotundum
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"* Lateral to the sella turcica * Allows passage of cranial nerve V"
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Foramen lacerum
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"* Runs through the temporal portion and sphenoid portion * Contains the internal carotid artery and eustachian tube"
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occipital bone
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joins the parietal bones along the lambdoidal suture; forms the back of the skull and the base of the cranium
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Foramen Magnum
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Large opening that the spinal cord runs through
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Occipital Condyles
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"* Rounded projections lateral to the foramen magnum * Articulates with the first cervical vertebra (atlas)"
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Hypoglossal canal
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"* Opening medial and superior to the occipital condyle * The hypoglossal nerve passes thought here (cranial nerve XII)"
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superior and inferior nuchal line
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"* two horizontal ridges that intersect the external occipital crest. * these lines mark the attachment of muscles and ligaments that stabilize the articulation between the first vertebrae and the skull at the occipital condyles and balance the weight of the head" |
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Superior Orbital Fissure
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"* Jagged opening inferior to the lesser wing * Opening for cranial nerves III, IV, V, and VI" |
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External Occipital protuberance and crest
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* Midline prominences posterior to the foreman magnum |
