Question

select the correct answer from each drop-down menu.
the nervous system and the muscle system respond to stimuli to produce motion. the movements of muscles are mostly voluntary. involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the .

Explanation:

For the first blank: Skeletal muscles are mostly voluntary. Smooth and cardiac muscles are involuntary, so the correct muscle type for voluntary movements is skeletal.
For the second blank: Involuntary movements (like reflexes) involving skeletal muscles occur when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the spinal cord (reflex arc). The brain is involved in voluntary control, while the spinal cord handles reflexes (involuntary for skeletal in reflex cases).

Answer:

First drop - down: skeletal
Second drop - down: spinal cord