Exam 3 The Ear Flashcards
What are the 3 functions of the Ear?
- Collect auditory stimuli
- Transduce the mechanical stimuli
- Transmit nerve impulses to CNS
What are the 3 divisions of the Ear?
- External
- Middle
- Inner
The ____ ear is the organ for both hearing and equilibrium
Inner Ear
The ____ ear represents a sound-collecting and conducting apparatus
external and middle
What are the 3 parts of the external ear
- Auricle/Pinna
- Ecternal ear canal/auditory meatus
- Tympanic memb (eardrum)
simple, coiled, tubular apocrine glands located within the skin of the external accoustic canal
Ceruminous glands
What is another name for ear wax?
Cerumen
What are the 3 parts of the inner ear?
- Tympanic cavity
- Auditory ossicles
- auditory tube
What are the 3 bones found within the ossicles of the middle ear?
Malleus, Incus, Stapes
What are the 4 major components of the cochlear duct?
- Tectorial memb.
- organ of corti
- basilar memb.
- stria vascularis
What part of the cochlear duct is vibrated by sound wave energy?
Tectorial memb. and basilar memb.
What are the 3 cells of the organ of corti?
- Hair cells
- Phalangeal cells
- Pillar cells
What part of the cochlear duct produces endolymph?
Stria vascularis
What is contained within the vestibular apparatus?
organs of equilibrium and motion detection:
- utricle
- saccule
- semicircular ducts
What are the 3 types of neuroepithelial cells found within the vestibular apparatus?
- macula utriculi
- macula sacculi
- crista ampullaris
