BIOS1171 Lecture Notes - Lecture 7: Bony Labyrinth, Medial Geniculate Nucleus, Cochlear Duct

90 views2 pages

Document Summary

Week 7 notes auditory and vestibular structure. Rigid outer wall of inner ear of temporal bone. Structure in inner ear which produces nerve impulses in response to sound vibrations. Contains 3 outer rows of hair cells, 1 inner row of hair cells. Sound waves vibrate the tympanic membrane (between outer/middle ear) > moves the malleus > incus > stapes > pushes fluid in inner ear against windows. = shearing force through cochlear duct > vibration of basilar membrane > pulls hair cells. = activation of cochlear nerve > impulses to brain. First order neuron (spinal ganglia of corti) > second order neurons (brain stem + bilateral projections) > third order neuron (medial geniculate nucleus > primary auditory cortex) Pri(cid:373)ary area 1 > wer(cid:374)icke"s area (cid:894)for i(cid:374)terpretatio(cid:374) of la(cid:374)guage(cid:895) * both cortices receive input from both ears. * one unilateral lesion does not equal loss of one ears hearing. Central part of bony labyrinth (medial to eardrum)

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related textbook solutions

Related Documents