Eye and ear Flashcards
(45 cards)
bones of orbit
Frontal bone Lacrimal bone Ethmoid bone Zygomatic bone Maxillary bone Palatine bone Sphenoid bone
lacrimal gland located
laterally and superiorly
lacrimal gland drains
medially; into the lacrimal canaliculi to the sac. Then it passes to the internal nasal meatus through the nasal lacrimal duct
levator palpabrae superioris action
Elevates superior eyelid
antagonist to levator palpabrae superioris
orbicularis oculi
opthalmic branch of trigeminal form
supraorbital and supratrochlear
maxillary branch of trigeminal forms
infraorbital
Superior oblique runs through the _____ and attaches _______.
trochlea; posteriorly
inferior oblique attaches
medially and anteriorly
inferior oblique action
abducts and elevates eye
ethmoid sinus location
medial to orbital
medial rectus is _______ to the superior oblique
lateral
superior rectis is ______ to the levator palpabrae superioris
inferior
superior rectus is deep to
levator palpabrae superioris
ciliary muscle
sensory, symp, parasymp (pupil size, etc)
optic nerve formed by
axons from ganglion layer
optic nerve is sensory for
sight
oculomotor nerve superior division innervates
superior rectus, levator palpabrae superioris
oculomotor nerve inferior division innervates
medial and inferior rectus, inferior oblique
trochlear innervates
superior oblique
abducens innervates
lateral rectus
levator palpabrae superioris O&I
O: lesser wing of spenoid bone, sup and ant to optic canal
I: superior tarsus and skin of superior eyelid
superior oblique o&i
O: body of sphenoid
I: Sclera of eye
Tendon of superior oblique passes through ______, changes its direction, and inserts deep to _____.
a fibrous ring or trochlea; superior rectus muscle