Motor and Reflex Function

Question 0

Myotatic reflex

Answer 0

The muscle stretch reflex where the receptive neuron has direct connection to the muscle spindle and with CNS neurons that send axons back to muscle. The basis for DTRs

Question 1

Hoffmann’s sign

Answer 1

tingling sensation triggered by mechanical stimulus in the distal portion of an injured nerve (AKA tinels sign)

Question 2

Clonus

Answer 2

Repetitive usually rhythmic reflex response elicited by stretching a tendon manually. It is an indication of hyperactive reflexes

Question 3

Athetosis

Answer 3

A slow writhing snakelike movement of body or body parts.

Question 4

hemiballisum

Answer 4

A flinging motion of one side of the body, can result in falls.
usually reflective of basal gannglia disease with chorea and athetosis.

Question 5

the biceps DTR tests?

Answer 5

C6

Question 6

Triceps DTR tests

Answer 6

C7

Question 7

Bracheoradialis DTR tests

Answer 7

radial nerve ad C6

Question 8

Patellar DTR tests

Answer 8

femoral nerve and L3-L4

Question 9

Achilles DTR tests

Answer 9

Tibial nerve and S1

Question 10

DTRs \_\_\_\_\_\_\_\_ wit damage to descending motor pathways.
Superficial reflexes (abdominal, cremasteric, plantar, anal wink) \_\_\_\_\_ with damage to descending motor pathways.

Answer 10

Increase

Decrease

Question 11

What will the effect of damage to the cerebellum or basal ganglia be on DTRs?

Answer 11

typically no change.

Question 12

Upper Motor neuron path:

Answer 12

Gray matter
internal capsule
cerebral peduncle
pyramidal decussation
descends cord
synapse  with LMN at  level or nerve root.