Exam 3: Eye, Ear, Etc lecture iii

Question 1

nasal cavity: opens to the outside at the _

Answer 1

nares

Question 2

nasal cavity: is subdivided by the _

Answer 2

nasal septum

Question 3

nasal cavity: the nasal septum is _ posteriorly and _ inferiorly

Answer 3

bone (ethmoid and vomer) and cartilage inferiorly

Question 4

nasal cavity: the lateral walls of the cavity bear inferiorly-projecting, scroll-like bony plates: the (3)

Answer 4

1. superior concha
2. middle concha
3. inferior concha

Question 5

nasal cavity: the superior and middle conchae are feats of the _ bone

Answer 5

ethmoid

Question 6

nasal cavity: the inferior nasal concha is an _ bone

Answer 6

independent

Question 7

nasal cavity: the conchae are covered with _ and increase the surface area for exchange of moisture and heat

Answer 7

vascular, secretory mucosa

Question 8

external ear: the ear is divided into 3 parts:

Answer 8

external, middle, and internal parts

Question 9

external ear: all 3 of the ear parts are concerned with the sense of _

Answer 9

hearing

Question 10

external ear: the internal ear also has a _ function

Answer 10

vestibular function (hearing and balance)

Question 11

external ear: the external ear is a funnel-like conduit for _ to reach the middle ear

Answer 11

airborne sound waves

Question 12

external ear: auricle (pinna) has a skeleton of _ that allows flexibility; includes the _

Answer 12

elastic cartilage; tragus

Question 13

external acoustic meatus: canal leading from auricle to _; contains glands that produce _

Answer 13

tympanic membrane; cerumen (earwax)

Question 14

tympanic membrane (eardrum): separates _ ear from _ear

Answer 14

external ear from middle ear

Question 15

pharyngotympanic tube: joins the middle ear to the _; it equalizes pressure btwn the _ and middle ear

Answer 15

nasopharynx; atmosphere

Question 16

the cranial nerves are #ed roughly from _ to _ (anatomical position) this means:

foramina in the more anterior bones/regions of the skull will transmit the _ nerves while posterior bones/regions transmit _ nerves

Answer 16

anterior to posterior

anterior=lower-numbered nerves (ex optic canal transmits nerve II) and posterior=higher-numbered nerves (ex jugular foramen)

Question 17

the crescent foramina all transmit a branch of _ nerve

Answer 17

trigeminal (though at least one of them also transmits another nerve)

Question 18

hypoglossal nerve goes through the _ foramen (think name)

Answer 18

hypoglossal

Question 19

into what does the superior fissure open? so it makes sense it would transmit nerves that control _ movement

Answer 19

the orbit, eyeball movement (oculomotor, trochlea, and abducens)

Question 20

where does the internal acoustic meatus lead? so it makes sense that it would transmit the _ nerve

Answer 20

the inner ear, the vestibulocochlear nerve since the vestibule is involved in balance and the cochlea in hearing