Neuro 3 - Skull, orbit, ear Flashcards
(40 cards)
Name the bones of the skull
- frontal
- parietal
- occipital
- temporal
- sphenoid
- ethmoid
Name the foramina in the skull
- ethmoidal foramina
- optic canal
- superior orbital fissure
- foramen rotundum
- foramen spinosum
- foramen ovale
- foramen lacerum
- jugular foramen
- hypoglossal canal
- foramen magnum
What passes through foramen magnum?
- vertebral arteries
- anterior and posterior spinal arteries
- spinal cord
What blood vessels passes through the ethmoidal foramina?
ethmoidal artery and vein
What passes through the optic canal?
CN II and ophthalmic artery
What passes though the SOF?
Superior ophthalmic vein and CN III, IV, V1, VI
What passes through the foramen rotundum?
CN V2
What passes through foramen ovale?
CN V3
Where do CN VII and VIII exit the skull from?
internal acoustic meatus
Apart from the cranial nerves, what passes through the IAM?
labrynthine artery
Through which foramen do the internal carotids enter the skull?
foramen lacerum
Which vessel can be found in the foramen spinosum?
middle meningeal artery
What passes through the hypoglossal canal?
CN XII - hypoglossal
What passes through the jugular foramen?
CN IX, X, XI and jugular veins
Which muscle opens the eyelid?
levator palpabrae superioris
The superior and inferior tarsals do what?
provides structural support to the eyelid
Name the extraoccular muscles
- LPS
- SO, IO
- SR, IR, LR, MR
Nerve supply of superior oblique?
trochlear nerve CN IV
Which one of the recti muscles are not supplied by the occulomotor nerve?
lateral rectus - supplied by abducens CN VI
Which EOM muscles have an isolated action?
lateral and medial recti
What does the superior rectus do?
elevates, abducts and intorts eye
What does the inferior oblique do?
elevates, abducts and extorts eye
What does the superior oblique do?
depresses, abducts, intorts eye
Blood supply to the eye and retina?
eye: ophthalmic artery
retina: central artery of the retina
