lab 4: the eye and the ear Flashcards
what bones form the orbit
zyg maxilla sphenoid frontnal ethmoid palatine lacrimal
what are the 8 structures of the lacrimal appartus
lacrimal galnds lacrimal ducts lacrimal papilla caruncle punctum of lacrimal appartus lacrimal canniculi lacrimal sac nasolacrimal duct
the two lacrimal canniculi drain into what
lacrimal sac
what are the openigns found i nthe orbit
sup orbital fissure inf orbital fissure optic formanen infnraobital forman supraorbital foramen/notch
what are the 7 muscles of the eye
med rectus
sup rectus
lateral rectus
inf rectus
sup oblique
inf oblique
lev papl. superioris
the lev sup pal. is innervates by what
III
the sup rectus is innervated by what
III
the inf rectus is inenrvatetd by what
III
the medial rectus is innervatetd by what
III
the lateral rectus is innervatted by what
VI
the superior oblique is inenrvated by what
IV
the inferior oblique is inenrvatioed by what
III
the inf oblique orginnattes laterally or medaially
laterall
qhat are the 5 nerves assocaited with the eye
optic (2) occulomotor (3) troc (4) trig (ohptthalmic) abductents (6)
what division of trigeminal is important for vision
opthalmic
what are the 3 divisons of the ophthalmic nerve
lacrima
grontal
nasociliary
what is the most medial nerve of the ophtalmic
nasocillary
what is tthe most lateral nerve of the ophthalmic
licarmial
what are the 2 imporatnt vessels of the eye
ophtalmic artery
lacrimal artery
where is the phtalmic arteri
passes through optic formane with the optiv never
what are the 3 external pars of the eye
cornea
scelra
conjunctiva (bulbar/palpebral)
the cornea is the what
clear membrane
the sclera is the what of the eye
white
the extnal is considered membranous or vascular
membranous
what are the middle eye structires (vascular)
iris pupil lens sus lig cill body choroid anterior and posterior cavity
what is another name for anterior cavity
aqueous humor
what is another name for the posterior cavity
vitreous humor
what is just posterior to the lens
posterior cavity
what are the 2 divisions of the anterior cavity
antterior and psoterior chambers
what divides the psoterior and anterior chambers
iris
what re the internal/nervous parts of the eye
ora serata retinna optic disk fovea centralis macula lutea
what are the exteral partts of the ear
auricle helix antihelix tragus antitragis concha lobule external acoustic meaturs mastoid porcess
the ear is located of nwhat portion of the temporal bone
petrous
what is anther name for middle ear
tympanic cavity
what is the lateral wall
tympanic membrane
what m,akes up the typanic membrane
pars flacida
parts tensa
what is located at the end of the external acoustic meatus
tympanic membrane
what are the 3 ossicles
malleus
incnus
stapes
what two ossicles are linkes
incus and stapes
what are the 2 muscles of the ear
tensor tympanic
stapedius meuscle
the tensor tympani musscle is inervated by what
mandibular nerve (CV3)
the stapedius muscle is inenrvatted by what enrves
facial nerve (CVII)
what is the internal ear tube called
eustathian tube (auditory tube)
what does the stapes insert on
oval window
what are the two windows
round and oval window
what is the cavity is the ear
tympanic antrum
what are the 3 subdivisons of the labrynth
cochae
vestibule
semicirc canals
what are the features of the coclea
modiolus helicotrema choch dunct scala vestibule scala tympini
what are the 2 sections that make up the vestibula
saccule and utricle
what is the byump at the end of the semicric cansls
ampullae
what are the 2 important nerves for the ear
vestibulococholae (CVIII) facial nerve (CVII)
where do the vesttibulo and facial nerves back through
the itnernal acoustic meatus
