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

How do the muscles on the foot work to balance on an ice skate, specifically the triangle of balance and how does it change when balancing on an ice skate? (Refer to anatomy, be specific)

Which of the following is NOT an example of passive immunization? A. Administration of tetanus toxoid B. Administration of hepatitis B immunoglobulin C. Administration of rabies immunoglobulin D. Transfer of antibodies via plasma therapy

Transcription and Translation 1. What is the main function of transcription and translation? (2 marks) 2. How is transcription different in eukaryotic and prokaryotic cells? (2 marks) 3. Explain the difference between pre-mRNA and post-transcript mRNA. (2 marks) 4. What is the function of the following: (4 marks) i. the cap ii. spliceosome iii. Poly A tail iv. termination sequence 5. What are advantages to the wobble feature of the genetic code? (2 marks) 6. Explain the difference between the: (3 marks) i. A site & P site ii. codon & anticodon iii. gene expression and gene regulation 7. Explain how the stop codon allows for termination. (1 mark) 8. In your own words, summarize the process of translation. (2 marks)