Cranial Nerve Anatomy 01

Topic:

Created on Friday, September 13 2013 by jdmiles

Last modified on Friday, September 13 2013.

 
        A) CN IV
 
        B) Abducens nerve
 
        C) CN III
 
        D) CN I
 
        E) CN VIII
 

 

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This question was created on September 13, 2013 by jdmiles.
This question was last modified on September 13, 2013.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) CN IV

This answer is correct.

The fourth cranial nerve (CN IV), named the trochlear nerve, emerges from the dorsal midbrain. It is the only cranial nerve to emerge from the dorsal surface of the brain. All other cranial nerves emerge ventrally.  (See References)

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B) Abducens nerve

This answer is incorrect.

The fourth cranial nerve (CN IV), named the trochlear nerve, emerges from the dorsal midbrain. It is the only cranial nerve to emerge from the dorsal surface of the brain. All other cranial nerves emerge ventrally.  (See References)

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C) CN III

This answer is incorrect.

The fourth cranial nerve (CN IV), named the trochlear nerve, emerges from the dorsal midbrain. It is the only cranial nerve to emerge from the dorsal surface of the brain. All other cranial nerves emerge ventrally.  (See References)

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D) CN I

This answer is incorrect.

The fourth cranial nerve (CN IV), named the trochlear nerve, emerges from the dorsal midbrain. It is the only cranial nerve to emerge from the dorsal surface of the brain. All other cranial nerves emerge ventrally.  (See References)

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E) CN VIII

This answer is incorrect.

The fourth cranial nerve (CN IV), named the trochlear nerve, emerges from the dorsal midbrain. It is the only cranial nerve to emerge from the dorsal surface of the brain. All other cranial nerves emerge ventrally.  (See References)

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References:

1. John Nolte; three-dimentional brain reconstructions by John Sundsten. The human brain: an introduction to its functional anatomy. Philadelphia, PA : Mosby/Elsevier, c2009. (ISBN:9780323041317)

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Cranial Nerve Anatomy 01
Question ID: 091313101
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/13/2013
Modified: 09/13/2013
Estimated Permutations: 3588000