KIN 224 Chapter 15: Homework

Label the autonomic plexuses in the figure.

Also known as the ______ division, the sympathetic nervous system exits the CNS via many spinal nerves T1—L2.

thoracolumbar

Action potentials travel along the preganglionic nerve fiber and enter the ______.

sympathetic chain ganglion

Fibers exiting the sympathetic chain ganglia take one of three routes: 1) the spinal nerve route, 2) the sympathetic nerve route, or 3) the ______ nerve route.

splanchnic

Arriving at target cells, ______ nerve fibers release acetylcholine or norepinephrine into the synaptic cleft.

postganglionic

The effect of norepinephrine binding to _______ receptors stimulates cardiac muscle cells.

adrenergic

Match the four pathways of sympathetic neurons with the region of the body having effector organs innervated by each pathway.

A: neck, torso, and limbs - spinal nerve pathway

B: head/eye - postganglionic sympathetic nerve pathway

C: abdomen/pelvis - splanchnic nerve pathway

D: adrenal gland - adrenal medulla pathway

Which neurotransmitters are considered catecholamines?

dopamine, norepinephrine, acetylcholine, epinephrine

Which of the following is an example of a system or function only controlled by the sympathetic nervous system?

the adrenal medulla

The sympathetic division is also called what?

thoracolumbar division

Esophogeal plexus:

carries signals that control swallowing correct

Hypogastric plexus:

carries signals to pelvic region correct

Pulmonary plexus:

passes signals to bronchi correct

Abdominal aortic plexus:

composed of celiac and mesenteric plexuses correct

Which of the following statements is true regarding the adrenal gland's relationship with the autonomic nervous system?

parasympathetic postganglionic neurons synapse with cells of the adrenal cortex