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25 Cards in this Set
- Front
- Back
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What are the 3 cranial fossae?
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Anterior, middle, posterior fossa
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Which cranial nerves are found in the anterior fossa?
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Olfactory (I) and Optic (II)
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Which cranial nerves are found in the middle fossa?
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Oculomotor (III), Trochlear (IV), Trigeminal (V), Abducent (VI), Facial (VII), Vestibulocochlear (VIII)
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Which cranial nerves are found in the posterior fossa?
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Glossopharyngeal (IX), Vagus (X), Accessory (XI), Hypoglossal (XII)
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Where does the tentorium cerebelli attach anteriorly?
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Anterior clinoid processes
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What is the bone structure that contains foramina that allow the passge of olfactory nerves?
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Cribriform plate
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What bony passageway allows optic nerves and ophthalmic arteries to travel through them?
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optic canals
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What two bones make up the middle cranial fossa?
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Sphenoid and temporal bones
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What sits within the sella turcica?
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Pituitary gland
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Where does the tentorium cerebellum attach in the middle cranial fossa?
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posterior clinoid processes
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There are many foramen in the middle cranial fossa. Name the 4 major ones.
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Superior orbital fissue, foramen rotundum, foramen ovale, foramen spinosum (SROS)
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What does the superior orbital fissure contain?
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CN III, IV, V1, VI, and ophthalmic veins
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What does the foramen spinosum contain?
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middle meningeal artery
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What does the carotid canal contain?
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Internal carotid a. w/ associated sympathetic fibers running on it.
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What runs through the foramen lacerum?
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Nothing (cartilage to close it)
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What is the adenohypophysis?
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Ant. pituitary
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What is the neurohypophysis?
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Post. pituitary
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Foramina in posterior cranial fossa
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foramen magnum, internal acoustic meatus, jugular foramen, hypoglossal canal
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Where does the venous drainage of the brain occur?
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dural venous sinuses
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Where do the dural venous sinuses eventually drain?
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IJV
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Which veins run between the internal and external compact bones?
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Diploic veins
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Which veins pass from outside the cranial cavity to the dural venous sinuses?
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Emissary veins
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Where is the confluence of the sinuses located?
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Posteriorly, before spreading to transverse sinus and sigmoid sinus
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In addition to the confluence of the sinuses, do the tranverse sinuses receive blood from any other veins?
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Yes, superior petrosal
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What does the cavernous sinus contain?
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internal carotid a., CN III, IV, V1, V2, VI
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