Sound waves that enter the ear canal are directed to the ____, causing it to vibrate.
A) oval window
B) round window
C) tympanic membrane
D) eustachian tube

Question

​Sound waves that enter the ear canal are directed to the ____, causing it to vibrate.
A) ​oval window
B) ​round window
C) ​tympanic membrane
D) ​eustachian tube

Quizplus · Accepted Answer

The sound waves that enter the ear canal are directed to the tympanic membrane, also known as the eardrum, causing it to vibrate. The vibration of the eardrum then stimulates the small bones in the middle ear, leading to further transmission of sound to the inner ear. The oval window and round window are both located in the inner ear and play roles in the transmission of sound, but they are not the initial point of vibration from incoming sound waves. The eustachian tube is a passage that connects the middle ear to the back of the throat, helping to equalize pressure and prevent fluid buildup, but it does not directly contribute to the reception of sound waves.

​Sound Waves That Enter the Ear Canal Are Directed to the ____

Sound Waves That Enter the Ear Canal Are Directed to the ____