Primitive Reflexes 1

Topic: Adult

Created on Saturday, September 16 2006 by

Last modified on Saturday, September 16 2006.

 
        A) The suck reflex typically appears by 9 months after birth; and disappears by the time the child is 10 months old
 
        B) The tonic neck reflex typically appears by 34 weeks of gestational age; and disappears by the time the child is 6 months old
 
        C) The Landau reflex typically appears by 3 months after birth; and then usually persists as a voluntary movement
 
        D) The tonic neck reflex typically appears by birth; and disappears by the time the child is 2 years old
 
        E) The foot grasp reflex typically appears by birth; and then usually persists as a voluntary movement
 

 

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This question was created on September 16, 2006 by .
This question was last modified on September 16, 2006.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) The suck reflex typically appears by 9 months after birth; and disappears by the time the child is 10 months old

This answer is incorrect.

The suck reflex typically appears by 34 weeks of gestational age; and disappears by the time the child is 4 months old  (See References)

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B) The tonic neck reflex typically appears by 34 weeks of gestational age; and disappears by the time the child is 6 months old

This answer is correct.

The tonic neck reflex typically appears by 34 weeks of gestational age; and disappears by the time the child is 6 months old  (See References)

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C) The Landau reflex typically appears by 3 months after birth; and then usually persists as a voluntary movement

This answer is incorrect.

The Landau reflex typically appears by 3 months after birth; and disappears by the time the child is 2 years old  (See References)

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D) The tonic neck reflex typically appears by birth; and disappears by the time the child is 2 years old

This answer is incorrect.

The tonic neck reflex typically appears by 34 weeks of gestational age; and disappears by the time the child is 6 months old  (See References)

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E) The foot grasp reflex typically appears by birth; and then usually persists as a voluntary movement

This answer is incorrect.

The foot grasp reflex typically appears by 34 weeks of gestational age; and disappears by the time the child is 10 months old  (See References)

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References:

1. Geyer, J.D., Keating, J.M., and Potts, D.C. (2002). Neurology for the Boards, Second Edition. Lippincott Williams & Wilkins, Philadelphia.

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adult
Primitive Reflexes 1
Question ID: 69161
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 09/16/2006
Modified: 09/16/2006
Estimated Permutations: 0