Finals: Reflexes

Question 1

What is the stimulus for the Moro reflex?

Answer 1

Body position change (not auditory stimulus).

Question 2

What is the stimulus for the startle reflex?

Answer 2

Loud sounds (auditory stimulus).

Question 3

What is the stimulus for the amphibian reflex?

Answer 3

Raising the pelvis of the baby, causing ipsilateral hand and leg flexion.

Question 4

What is the Babinski reflex?

Answer 4

A primitive reflex where stroking the sole of the foot causes the big toe to extend and the other toes to fan out.

Question 5

What is Chaddock’s sign?

Answer 5

A variation of the Babinski reflex, where stroking the lateral malleolus elicits a similar toe response.

Question 6

What is Gordon’s sign?

Answer 6

A variation of the Babinski reflex, where squeezing the calf muscle elicits a similar toe response.

Question 7

What is Oppenheimer’s sign?

Answer 7

A variation of the Babinski reflex, where stroking down the tibia elicits a similar toe response.

Question 8

What is the flexor withdrawal reflex?

Answer 8

A primitive reflex where flexion of a limb occurs in response to a painful stimulus, preventing isolated joint movements.

Question 9

At what age does the flexor withdrawal reflex typically disappear?

Answer 9

Around 2 months.

Question 9

What is the cross extensor reflex?

Answer 9

A reflex that coexists with the flexor withdrawal reflex; when one limb withdraws from a painful stimulus, the opposite limb extends.

Question 10

What is the symmetric tonic neck reflex (STNR)?

Answer 10

When the head is flexed, the arms flex and the legs extend; when the head is extended, the arms extend and the legs flex.

Question 11

What is the asymmetric tonic neck reflex (ATNR)?

Answer 11

When the head is turned to one side, the arm and leg on that side extend, and the arm and leg on the opposite side flex.

Question 12

What is the labyrinthine reflex?

Answer 12

Prone position leads to flexion of the limbs, and supine position leads to extension of the limbs.

Question 12

: What is the body righting on head reflex?

Answer 12

The body tries to keep the head upright when the body position changes.

Question 13

What is the body righting on body reflex?

Answer 13

Aligning the body segments when one part of the body is moved.

Question 14

What is the consensual eye reflex?

Answer 14

When one eye is exposed to light, both pupils constrict.

Question 15

What is the doll’s eye reflex?

Answer 15

When the head is rotated, the eyes maintain fixation on a visual target, indicating normal brainstem function.

Question 16

What does a lack of the doll’s eye reflex indicate?

Answer 16

A possible brain lesion.

Question 17

: What is the gag reflex testing?

Answer 17

The function of the vagus nerve.

Question 18

What is the glabellar tap reflex?

Answer 18

Blinking in response to tapping the glabella (forehead area between the eyes).

Question 19

What is homolateral limb synkinesis?

Answer 19

An abnormal reflex where a voluntary movement on one side of the body causes involuntary movement on the same side.

Question 20

What is Soque’s phenomenon?

Answer 20

In stroke patients, when the shoulder is abducted to 90 degrees or more, the fingers slowly open.

Question 21

What is the plantar grasp reflex?

Answer 21

Stroking the sole of an infant’s foot causes the toes to curl.

Question 21

What is Raimiste’s phenomenon?

Answer 21

In stroke patients, resistance applied to the unaffected limb causes the affected limb to move in the same direction.

Question 22

What is the palmar grasp reflex?

Answer 22

A primitive reflex where placing an object in an infant’s palm causes the fingers to close around it.

Question 23

At what age should the rooting reflex disappear?

Answer 23

By 6 months of age.

Question 24

Q: What is the stepping reflex?

Answer 24

When held upright with feet touching a surface, an infant will make stepping movements. This reflex typically disappears as the child matures.