The afferent division of the nervous system is also known as the

These general receptors respond to pain caused by external and internal stimuli.

The right and left hemispheres remain in constant communication primarily through commissures in the

These gray matter nucleui send nerve impulses to muscles and glands.

A network of interweaving anterior branches of spinal nerves is a

These general receptors respond to changes in temperature.

Saltatory conduction of a nerve impulse occurs only along

The middle and inner ear are housed within the

 Parasympathetic stimulation of blood vessels causes vasoconstriction and increased blood pressure.

Postganglionic sympathetic fibers are relatively long compared to those of the parasympathetic division.