Review Tonic Neck Reflex

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Tonic Neck Reflex

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Total Questions : 2

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Question 1:

A nurse is assessing a newborn’s reflexes.

Which of the following actions by the nurse would elicit the tonic neck reflex?

A. Holding the newborn upright with feet touching a flat surface. B. Stroking the outer edge of the sole of the newborn’s foot up toward the toes. C. Turning the newborn’s head to one side while in a supine position. D. Clapping hands or making a loud noise near the newborn.

Answer and Explanation

Choice A:

holding the newborn upright with feet touching a flat surface would elicit the stepping reflex, which is a primitive walking movement that disappears by 4 to 8 weeks of age.

Choice B:

stroking the outer edge of the sole of the newborn’s foot up toward the toes would elicit the Babinski reflex, which is a fanning and hyperextension of the toes that disappears by 12 months of age.

Choice C:

Turning the newborn’s head to one side while in a supine position would elicit the tonic neck reflex.This reflex is also known as the fencing reflex because the newborn assumes a posture similar to that of a fencer, with one arm and leg extended on the side to which the head is turned and the opposite arm and leg flexed.This reflex is present at birth and disappears by 3 to 4 months of age.

Choice D:

clapping hands or making a loud noise near the newborn would elicit the Moro reflex, which is a startle response that involves symmetric abduction and extension of the arms followed by flexion and adduction of the arms across the chest.This reflex is present at birth and disappears by 4 to 6 months of age.

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Question 2:

A nurse is teaching a group of parents about infant reflexes.

Which of the following statements by one of the parents indicates an understanding of the teaching? (Select all that apply.)

A. “The rooting reflex helps my baby find my breast or bottle for feeding.” B. “The plantar grasp reflex will disappear when my baby starts to walk.” C. “The Moro reflex is a sign that my baby is scared or startled.” D. “The symmetrical tonic neck reflex helps my baby crawl on all fours.” E. “The Babinski reflex is normal for infants but abnormal for older children and adults.”

Answer and Explanation

Choice A:

The rooting reflex helps the baby locate the nipple for feeding.

Choice B:

the plantar grasp reflex disappears before the baby starts to walk, not when. This reflex causes the baby to curl the toes when pressure is applied to the sole of the foot.

Choice C:

The Moro reflex is a startle response that causes the baby to extend the arms and legs and then flex them back.

Choice D:

the symmetrical tonic neck reflex disappears before the baby learns to crawl, not helps. This reflex causes the baby to extend the arm and leg on the same side when the head is turned to that side.

Choice E:

The Babinski reflex is a normal response in infants where the big toe extends and the other toes fan out when the sole of the foot is stroked.