Multiple Choice 1 point Which of the following correctly identifies the sequence of actions after movements of the stapes strike the oval window on the fluid-filled cochlea? pressure waves basilar membrane moves hair cells relay message stereocilia bend against tectorial membrane auditory nerve basilar membrane moves pressure waves stereocilia bend against tectorial membrane hair cells relay message auditory nerve pressure waves basilar membrane moves stereocilia bend against tectorial membrane hair cells relay message auditory nerve basilar membrane moves pressure waves hair cells relay message stereocilia bend against tectorial membrane auditory nerve

The correct sequence is: **pressure waves → basilar membrane moves → stereocilia bend against tectorial membrane → hair cells relay message → auditory nerve**<br /><br />Here's why:<br /><br />1. **Pressure Waves:** The stapes striking the oval window creates pressure waves in the perilymph of the cochlea. This is the initial event.<br /><br />2. **Basilar Membrane Moves:** These pressure waves cause the basilar membrane to vibrate.<br /><br />3. **Stereocilia Bend:** The movement of the basilar membrane causes the hair cells' stereocilia to bend against the tectorial membrane. This bending is crucial for transduction.<br /><br />4. **Hair Cells Relay Message:** The bending of the stereocilia triggers a depolarization of the hair cells, which then release neurotransmitters.<br /><br />5. **Auditory Nerve:** These neurotransmitters stimulate the auditory nerve, sending the signal to the brain.<br />