PCSD 313 Exam 4 Hearing A&P Practice Questions and Study Guide |
Communication Sciences Review
audition - ANS ✔✔another word for hearing
purpose of the ear - ANS ✔✔to convert acoustic energy into electrochemical energy so that the
brain can process the information
3 ear parts - ANS ✔✔outer ear, middle ear, inner ear
outermost portion of the outer ear - ANS ✔✔pinna/auricle (not necessary for hearing)
purpose of outer ear - ANS ✔✔transmit sound to the middle and inner ears and to localize
sound
parts of outer ear not comprised of cartilage - ANS ✔✔lobe/lobule and concha cava (entrance
to the ear)
what fills the outer ear - ANS ✔✔air
what is medial to the concha cava - ANS ✔✔external auditory meatus/ear canal
what do the External Auditory Meatus and concha cava work to do? - ANS ✔✔transmit sound
to the middle and inner ear
External Auditory Meatus - ANS ✔✔lateral 1/3 is made of cartilage. Medial ⅔ forms the bony
meatus of the temporal bone. Terminates at tympanic membrane (TM) (Ear drum). contains cilia
and cerumen
, Cerumen - ANS ✔✔ear wax that protects ear from dryness and intrusion of bugs/other foreign
bodies
boundary between outer and middle ears - ANS ✔✔tympanic membrane
tympanic membrane - ANS ✔✔transmits sound to the 3 ossicles of bones (ossicular chain) of
the middle ear. sound enters the outer ear and then reaches this point, setting it to vibration
bones in middle ear - ANS ✔✔malleus, incus, stapes
ossicular chain - ANS ✔✔delivers vibrations to inner ear and helps protect the inner ear from
excessively loud vibrations
middle ear is filled with - ANS ✔✔air
malleus - ANS ✔✔most lateral bone in middle ear. point of attachment for tympanic membrane
incus - ANS ✔✔medial bone compared to malleus in middle ear.
stapes - ANS ✔✔most medial bone in middle ear. also the smallest. its footplate fills the oval
window (a part of the inner ear)
malleus and incus articulation - ANS ✔✔connected by a saddle joint. They move as 1 unit when
the tympanic membrane vibrates
muscles in middle ear - ANS ✔✔stapedius and tensor tympani. Both attached to ossicular chain
Communication Sciences Review
audition - ANS ✔✔another word for hearing
purpose of the ear - ANS ✔✔to convert acoustic energy into electrochemical energy so that the
brain can process the information
3 ear parts - ANS ✔✔outer ear, middle ear, inner ear
outermost portion of the outer ear - ANS ✔✔pinna/auricle (not necessary for hearing)
purpose of outer ear - ANS ✔✔transmit sound to the middle and inner ears and to localize
sound
parts of outer ear not comprised of cartilage - ANS ✔✔lobe/lobule and concha cava (entrance
to the ear)
what fills the outer ear - ANS ✔✔air
what is medial to the concha cava - ANS ✔✔external auditory meatus/ear canal
what do the External Auditory Meatus and concha cava work to do? - ANS ✔✔transmit sound
to the middle and inner ear
External Auditory Meatus - ANS ✔✔lateral 1/3 is made of cartilage. Medial ⅔ forms the bony
meatus of the temporal bone. Terminates at tympanic membrane (TM) (Ear drum). contains cilia
and cerumen
, Cerumen - ANS ✔✔ear wax that protects ear from dryness and intrusion of bugs/other foreign
bodies
boundary between outer and middle ears - ANS ✔✔tympanic membrane
tympanic membrane - ANS ✔✔transmits sound to the 3 ossicles of bones (ossicular chain) of
the middle ear. sound enters the outer ear and then reaches this point, setting it to vibration
bones in middle ear - ANS ✔✔malleus, incus, stapes
ossicular chain - ANS ✔✔delivers vibrations to inner ear and helps protect the inner ear from
excessively loud vibrations
middle ear is filled with - ANS ✔✔air
malleus - ANS ✔✔most lateral bone in middle ear. point of attachment for tympanic membrane
incus - ANS ✔✔medial bone compared to malleus in middle ear.
stapes - ANS ✔✔most medial bone in middle ear. also the smallest. its footplate fills the oval
window (a part of the inner ear)
malleus and incus articulation - ANS ✔✔connected by a saddle joint. They move as 1 unit when
the tympanic membrane vibrates
muscles in middle ear - ANS ✔✔stapedius and tensor tympani. Both attached to ossicular chain
