Which of these events is caused by the stapes pushing against membrane covering the oval window? A The pressure change causes the organ of Corti to vibrate horizontally. B The pressure change causes the tectorial membrane to move horizontally. C The pressure change causes the organ of Corti to vibrate vertically. D The pressure change causes the tectorial membrane to vibrate vertically.

The correct answer is option C "The pressure change causes the organ of Corti to vibrate vertically".

Explanation:

The organ of Corti is an important structure for auditory perception that acts as a receptor organ for hearing. The organ of Corti is located in the mammalian cochlea and it allows for the transduction of auditory signals into nerve impulses according to the vibrations that are received from external sources. If the receiving sounds comes from the stapes pushing against membrane covering the oval window, the pressure change will causes the organ of Corti to vibrate vertically. Stimulus from membrane covering the oval window are sent to the organ of Corti, which responds by vibrating vertically.