During a stretch reflex, the extrafusal motor neuron is excited directly by the
A) intrafusal motor neuron.
B) muscle spindle receptor.
C) spindle afferent neuron.
D) intrafusal muscle.
E) muscle.
Question 2
The latency of withdrawal reflexes indicates that they involve
A) no synapses.
B) at least 1 synapse.
C) at least 2 synapses.
D) at least 3 synapses.
E) more than 3 synapses.
