Question

A decrease in the function of Schwann cells may cause ______________.

A. a decrease in cerebrospinal fluid in the brain's cavities

B. a delay in the signal transmission up the spinal cord

C. a delay in the signal transmission down the spinal cord

D. a delay in the signal transmission from one gyrus of the brain to another

E. a delay in the signal transmission to the biceps brachii muscle

The stretch reflex of the quadriceps femoris muscle group causes it to contract. At the same time, the hamstring group relaxes. The hamstring group is effected by ___________.

A. the tendon reflex

B. reciprocal inhibition

C. the flexor reflex

D. its own stretch reflex

E. the crossed-extensor reflex

Answer 1

Question 1

Answer is E (a delay in the signal transmission to the biceps brachii muscle )

The damage to it does not affect the spinal cord and affect the function of signal transmission to the biceps brachii muscle.

Question 2

Answer A (the tendon reflex )

the tendon reflex causes the relax by hamstrings ()antagonist muscles.)