Chapter 15

Question 1

Autonomic nervous system

Answer 1

A division of the nervous system that monitors and adjusts glands, smooth muscle, and cardiac muscle.

Question 2

visceral reflexes

Answer 2

—unconscious and automatic reflexes to stimuli.

Question 3

Parasympathetic Nervous System

Answer 3

A division of the ANS that is usually involved in activating normal body functions such as digestion, urination, and defecation.

Question 4

Sympathetic Nervous System

Answer 4

A division of the ANS that is usually involved in preparing the body for physical activity.

Question 5

Preganglionic Neuron

Answer 5

A neuron that transfers a signal from the CNS to a ganglion.

Question 6

Postganglionic Neuron

Answer 6

A neuron that transfers a signal from a ganglion to an organ.

Question 7

PNS signals

Answer 7

consists of both long preganglionic neurons that nearly reach the organ and short postganglionic neurons that make it the rest of the way.

Question 8

Sympathetic nerves

Answer 8

The neurons of the sympathetic nervous system are located in the spinal cord between the first thoracic and second lumbar regions. The neurons use spinal nerves to move messages to organs and communicate the commands of the ANS.

Question 9

Parasympathetic nerves

Answer 9

It sends messages from the brain via specific cranial nerve, and from the spinal cord via the pelvic nerves.

Question 10

Sympathetic neurons

Answer 10

short preganglionic neurons and long postganglionic neurons.