In regards to muscle stretch reflex
A
The receptors are sensitive to changes in muscle tension
B
Muscle spindle sensitivity could be adjusted by γ-motor neuron activity
C
Reciprocal inhibition relaxes antagonistic muscles
D
The afferent output of the primary sensory endings to muscle spindle adapts more rapidly than from the secondary endings
E
Excitatory reflex arc is polysynaptic
Correct Answer: The receptors are sensitive to changes in muscle tension, Muscle spindle sensitivity could be adjusted by γ-motor neuron activity, Reciprocal inhibition relaxes antagonistic muscles, The afferent output of the primary sensory endings to muscle spindle adapts more rapidly than from the secondary endings