The auditory pathway to the cerebral cortex. Introduction: The ear contains mainly three parts, external ear, middle ear, and the internal ear. The ear consists of the pinna and the external acoustic meatus. The pinna collects the sound waves and sends it to the external acoustic meatus. From the various parts of the ear, the sound wave transmits to the auditory center, which lies in the cerebral cortex of the brain. The cochlear hair cell receptors transmit auditory information to the cerebral cortex through the ascending auditory pathway. In the first step, impulses reach the cochlear nuclei in the medulla via the cochlear nerve. Then, it reaches the junction of the medulla and pons where superior olivary nuclei is present. It further ascends to the inferior colliculus through lateral lemniscus. From the inferior colliculus, the auditory information reaches to the medial geniculate nucleus of the thalamus. Finally, conscious awareness of sound is generated when it reaches the primary auditory cortex by projecting axons of the thalamic neurons. Impulses from both ears reach each primary auditory cortex separately.

Question

Want to see the full answer?

Answer 1

Question

Chapter 16, Problem 19RQ

Summary Introduction

To review:

The auditory pathway to the cerebral cortex.

Introduction:

The ear contains mainly three parts, external ear, middle ear, and the internal ear. The ear consists of the pinna and the external acoustic meatus. The pinna collects the sound waves and sends it to the external acoustic meatus. From the various parts of the ear, the sound wave transmits to the auditory center, which lies in the cerebral cortex of the brain.

The cochlear hair cell receptors transmit auditory information to the cerebral cortex through the ascending auditory pathway. In the first step, impulses reach the cochlear nuclei in the medulla via the cochlear nerve. Then, it reaches the junction of the medulla and pons where superior olivary nuclei is present. It further ascends to the inferior colliculus through lateral lemniscus.

From the inferior colliculus, the auditory information reaches to the medial geniculate nucleus of the thalamus. Finally, conscious awareness of sound is generated when it reaches the primary auditory cortex by projecting axons of the thalamic neurons. Impulses from both ears reach each primary auditory cortex separately.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

The Sentinel Cell: Nature’s Answer to Cancer?

Molecular Biology Question You are working to characterize a novel protein in mice. Analysis shows that high levels of the primary transcript that codes for this protein are found in tissue from the brain, muscle, liver, and pancreas. However, an antibody that recognizes the C-terminal portion of the protein indicates that the protein is present in brain, muscle, and liver, but not in the pancreas. What is the most likely explanation for this result?

Molecular Biology Explain/discuss how “slow stop” and “quick/fast stop” mutants wereused to identify different protein involved in DNA replication in E. coli.