Week 3 Wet Room - Stations 1, 2 and 3 Flashcards
3 holes of the orbit
optic foramen
superior orbital fissure
inferior orbital fissure
what passes through the optic foramen
optic nerve and opthalmic artery
what passes through the superior orbital fissure
CN III, IV, VI
opthalmic nerve (V1)
opthalmic veins
inferior orbital fissure
zygomatic branch of V2
what hole do the opthalmic veins pass through
the superior orbital fissure
7 bones that make the orbit
frontal, zygomatic, maxillary, sphenoid, palatine, ethmoid, lacrimal
which layers of the eye are incomplete
vascular layer and retina
division of the eye
anterior segment
- anterior chamber
- posterior chamber
posterior segment
what is ora serrata
junction between the photosensitive retina and vascular choroid
what produces aqueous humor
ciliary bodies
what is the only eye muscle not arise from the posterior aspect of the orbit
inferior rectus
ligaments that prevent over-adduction/abduction of the eye
later and medial check ligaments
what is the opthalmic artery a branch off
internal carotid
in 6th nerve palsy where does the eye deviate to
downwards and out
3 bones of middle ear
malleus, incus and stapes
which ossicle is the shape of a horse stirrup
stapes
which ossicle is in contact with the tympanic membrane
malleus
what membrane do you see when looking in the ear
the tympanic membrane
what does the stapes connect to
oval window
muscle that attaches to the malleus and its function
tensor tympani - tighten the tympanic membrane to reduce the amplitude of vibrations
muscle that attaches to the stapes and its function
stapedius - tense oval window to reduce oscillation (again dampen loud sounds)
two muscle of the middle ear
stapedius and tensor tympani
which bone does the middle and inner ear lie in
petrous part of the temporal bone
joints between ear ossicles
synovial
where is perilymph
in the bony labryrinth
where is endolymph
in the membranous labyrinth
entry and exit of facial nerve through temporal bone
internal acoustic meatus, stylomastoid foramen
branch given off by the facial nerve in the middle ear
chorda tympani
innervations of chorda tympani
taste on anterior 2/3
what supplies the taste to posterior 1/3 of the tongue
glossopharyngeal
secretomotor innervation for the submandibular and sublingual glands comes from where
the chorda tympani branch of facial nerve
