Section 11.4

Question 1

spinal nerves

Answer 1

the 31 pairs of nerves within the somatic system that transmit motor, sensory, and autonomic signals between the spinal cord and the rest of the body.

Question 2

cranial nerves

Answer 2

the 12 pairs of nerves within the parasympathetic division of the autonomic system, which emerge directly from the brain and serve the head, neck, and body trunk.

Question 3

substantia gelatinosa

Answer 3

a band of grey matter in the spinal cord that, when stimulated, produces a neurotransmitter that communicates with an injured region of the body.