Lab XII Flashcards
What forms the anterior cranial fossa and what part of the brain is here?
the ethmoid bone (with the cribriform plate and crista Galli), the frontal bone, and the lesser wings of the sphenoid bone
falx cerebri and frontal lobe
what forms the middle cranial fossa and what part of the brain is here?
lesser wings of sphenoid, greater wings of the sphenoid, petrous part of the temporal bone,
the anterior aspects of the temporal lobe
middle and inner ear chambers lie deep to it
What travels through the optic canal and where is it?
lesser wing of the sphenoid, middle cranial fossa, CN II
What travels through the superior orbital fissure and where is it?
middle cranial fossa, between lesser and greater wing of the sphenoid, CN III, CN IV, CN V1, CN VI
What travels through the foramen rotundum and where is it?
middle cranial fossa, greater wing of the sphenoid bone, maxillary division of the trigeminal nerve CN V2
What travels through the foramen ovale and where is it?
middle cranial fossa, greater wing of the sphenoid bone, middlemost hole
mandibular division of the trigeminal nerve, CN V3
What travels through the foramen spinosum and where is it?
middle cranial fossa, greater wing of the sphenoid bone
middle meningeal artery
What travels through the foramen lacerum and where is it?
middle cranial fossa, medial to the foramen ovale
nothing passes through
What lies in and deep to the sella turcica?
I: the pituitary gland
D: sphenoid sinus
What does the posterior cranial fossa contain?
the cerebellum, pons, and medulla oblongata
What forms the posterior cranial fossa?
the petrous part of the temporal bone, the occipital bone
Where is the internal acoustic meatus and what runs through it?
the posterior cranial fossa
Facial nerve (CN VII), vestibulocochlear nerve (CN VIII)
Where is the jugular foramen and what runs through it?
the posterior cranial fossa
glossopharyngeal nerve (CN IX), vagus nerve (CN X), accessory nerve (CN XI), internal jugular vein
Where is the hypoglossal canal and what runs through it?
the posterior cranial fossa
the hypoglossal nerve (XII)
What runs through the foramen magnum?
spinal cord, spinal part of the accessory nerve entrance (CN XI), vertebral arteries, spinal arteries
