In addition to the ipsilateral cochlear nucleus, the main ascending auditory pathway from the right ear to the brain includes the:
A) contralateral cochlear nucleus and the contralateral auditory cortex.
B) ipsilateral superior olivary complex and the ipsilateral auditory cortex.
C) contralateral inferior colliculus and the contralateral auditory cortex.
D) contralateral inferior colliculus and the ipsilateral auditory cortex.

Question

Quizplus · Accepted Answer

The main ascending auditory pathway from the ear to the brain involves both ipsilateral and contralateral structures. After the initial synapse in the ipsilateral cochlear nucleus, the pathway crosses to the contralateral side of the brain. It includes the contralateral inferior colliculus and the contralateral auditory cortex, making option C correct. This pathway ensures that sound from either ear can be processed by both hemispheres of the brain, allowing for precise localization and interpretation of sounds.

In Addition to the Ipsilateral Cochlear Nucleus, the Main Ascending