Based on the attached figure (Figure 10.9 in your textbook), what causes K+ influx across the cell membrane of the apical end of hair cells of the ear? (A) Spiral ganglion Tectorial membrane Scala vestibuli Inner hair cells -45 mV Scala tympani Outer hair cells Scala media Organ of Corti Perilymph Low K+ 0mV Endolymph High K+ + 80 mV (B) Stria vascularis Basilar membrane Ca²+ Afferent. nerve O O 00 Depolarization Nucleus O 00 O -Depolarization- Vesicles K+ ions move down their concentration gradient due to high K+ in endolymph Transmitter To brain Stereocilia displaced toward the highest kinocilium, and tip links open K+ channels Inner hair cells -45 mV Scala tympani Perilymph Low K+ 0mV Basilar membrane Ca2 Afferent. nerve Nucleus A., and B., above Vesicles Transmitter To brain Stereocilia displaced toward the highest kinocilium, and tip links open K+ channels K+ ions move down their concentration gradient due to high K+ in endolymph Stereocilia bent away from the highest kinocilium, and tip links open K+ channels Ligand-gated K+ channels open due to deflection of the basilar membrane

Based on the attached figure (Figure 10.9 in your textbook), what causes K+ influx across the cell membrane of the apical end of hair cells of the ear? (A) Spiral ganglion Tectorial membrane Scala vestibuli Inner hair cells -45 mV Scala tympani Outer hair cells Scala media Organ of Corti Perilymph Low K+ 0mV Endolymph High K+ + 80 mV (B) Stria vascularis Basilar membrane Ca²+ Afferent. nerve O O 00 Depolarization Nucleus O 00 O -Depolarization- Vesicles K+ ions move down their concentration gradient due to high K+ in endolymph Transmitter To brain Stereocilia displaced toward the highest kinocilium, and tip links open K+ channels Inner hair cells -45 mV Scala tympani Perilymph Low K+ 0mV Basilar membrane Ca2 Afferent. nerve Nucleus A., and B., above Vesicles Transmitter To brain Stereocilia displaced toward the highest kinocilium, and tip links open K+ channels K+ ions move down their concentration gradient due to high K+ in endolymph Stereocilia bent away from the highest kinocilium, and tip links open K+ channels Ligand-gated K+ channels open due to deflection of the basilar membrane

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter6: The Peripheral Nervous System: Afferent Division; Special Senses

Section: Chapter Questions

Problem 2SQE

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