Zoe MCQ 20

Topic: Anatomy

Created on Saturday, November 26 2022 by zoe

Last modified on Saturday, November 26 2022.

 
        A) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → brachium of superior colliculi → bilateral superior colliculi in midbrain → medial geniculate nucleus in thalamus → auditory cortex in temporal lobe
 
        B) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → bilateral inferior colliculi in midbrain → brachium of inferior colliculi → bilateral inferior colliculi in midbrain → medial geniculate nucleus in thalamus → auditory cortex in temporal lobe
 
        C) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → brachium of inferior colliculi → bilateral inferior colliculi in midbrain → medial geniculate nucleus in thalamus → auditory cortex in temporal lobe
 
        D) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → brachium of inferior colliculi → bilateral inferior colliculi in midbrain → lateral geniculate nucleus in thalamus → auditory cortex in temporal lobe
 

 

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This question was created on November 26, 2022 by zoe.
This question was last modified on November 26, 2022.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → brachium of superior colliculi → bilateral superior colliculi in midbrain → medial geniculate nucleus in thalamus → auditory cortex in temporal lobe

This answer is incorrect.

The auditory pathway is carried via the inferior colliculi not the superior.  (See References)

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B) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → bilateral inferior colliculi in midbrain → brachium of inferior colliculi → bilateral inferior colliculi in midbrain → medial geniculate nucleus in thalamus → auditory cortex in temporal lobe

This answer is incorrect.

The brachium of the inferior colliculi precedes the bilateral inferior colliculi of the midbrain.  (See References)

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C) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → brachium of inferior colliculi → bilateral inferior colliculi in midbrain → medial geniculate nucleus in thalamus → auditory cortex in temporal lobe

This answer is correct.

Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → brachium of inferior colliculi → bilateral inferior colliculi in midbrain → medial geniculate nucleus in thalamus → auditory cortex in temporal lobe  (See References)

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D) Oval window → cochlear duct with Organ of Corti → spiral ganglion → cochlear nerve → cochlear nuclei in medulla → brachium of inferior colliculi → bilateral inferior colliculi in midbrain → lateral geniculate nucleus in thalamus → auditory cortex in temporal lobe

This answer is incorrect.

The auditory pathway uses the medial geniculate nucleus (think "M" for music).  (See References)

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References:

1. Nolte Chapter 14: Page 335

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anatomy
Zoe MCQ 20
Question ID: 112622092
Question written by zoe. (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 11/26/2022
Modified: 11/26/2022
Estimated Permutations: 24