Question 25

The cochlea is a structure in the inner ear containing auditory receptors.

The cochlea is a spiral-shaped structure in the inner ear that is essential for hearing because it contains the auditory receptors known as hair cells. These hair cells convert sound vibrations into electrical signals that are sent to the brain.

A) Cochlea

This option is correct as the cochlea is specifically designed to house the auditory receptors that facilitate the process of hearing. It plays a crucial role in the auditory system by converting sound waves into nerve impulses that the brain interprets.

B) Vestibular organ

The vestibular organ is primarily responsible for maintaining balance and spatial orientation, not for hearing. It does not contain auditory receptors, making it an incorrect choice in the context of the question.

C) Oval window

The oval window is a membrane-covered opening that leads from the middle ear to the cochlea. While it plays a role in transmitting sound vibrations, it does not contain auditory receptors itself, thus making this option incorrect.

D) Pinna

The pinna is the external part of the ear that helps collect sound waves and direct them into the ear canal. It does not contain any auditory receptors and is therefore not relevant to the question regarding the structure in the inner ear.

Conclusion

The cochlea is definitively the correct answer as it is the only structure in the inner ear specifically designed to contain auditory receptors. Other options, such as the vestibular organ, oval window, and pinna, serve different functions related to hearing and balance but do not contain the auditory receptors necessary for sound perception.