Lecture 9- Eye and Ear Flashcards
how many extra-ocular muscles
6
rectus superior, lateral, inferior, and medial
superior and inferior oblique
what 2 nerves come off V1?
frontal and lacrimal n
palsy of the oculomotor nerve involves which muscles
superior rectus, inferior rectus, medial rectus, inferior oblique
what muscle is involved in trochlear nerve palsy
superior oblique not working
what muscle is involved in abducens nerve palsy
lateral rectus
when you get dust in your eye and it causes pain, what nerve is involved?
trigeminal V1
what is the parent of the Opthalmic artery
internal carotid
what is the grandparent of the opthalmic artery
common carotid
if there is a blockage in the Opthalmic artery, what could happen?
vision lost
which nerve travels through internal acoustic meatus
facial nerve
3 bones that make up the eye orbit
maxilla, frontal, zygomatic
7 bones that make up full eye socket
maxilla, frontal, zygomatic, ethmoid, sphenoid, palentine, lacrimal
what ligament stabilizes the orbicularis oculi ms?
medial palpebral ligament
what tendon helps open the eye
levator palpebrae superioris tendon/ms
where does the nasolacrimal duct drain?
inferior meatus of the nose
what does the eye do with a oculomotor palsy
when looking straight, affected eye will go down and out
what will the eye look like in a trochlear nerve palsy
eye will look up and in
tumor in the sphenoid sinus can cause…
exophthalmos
the facial nerve travels through the internal acoustic meatus. What bone of the skull is this located?
temporal
3 bones of the ear
malleus, incus, stapes
How does the facial nerve supply the ear?
motor function to stapedius ms in middle ear
