Ch 29: Intro to the Autonomic Nervous System

Question 1

acetylcholinesterase

Answer 1

enzyme responsible for the immediate breakdown of acetylcholine when released from the nerve ending; prevents overstimulation of cholinergic receptor sites.

Question 2

adrenergic receptors

Answer 2

receptor sites on effectors that respond to norepinephrine

Question 3

alpha-receptors

Answer 3

adrenergic receptors found in smooth muscles

Question 4

autonomic nervous system

Answer 4

portion of the central and peripheral nervous systems that, with the endocrine system, functions to maintain internal homeostasis

Question 5

beta-receptors

Answer 5

adrenergic receptors that are found in the heart, lungs, and vascular smooth muscle

Question 6

ganglia/ ganglion

Answer 6

groups of closely packed nerve cells

Question 7

monoamine oxidase (MAO)

Answer 7

enzyme that breaks down norepinephrine to make it inactive

Question 8

muscarinic receptors

Answer 8

cholinergic receptors that also respond to stimulation by muscarine

Question 9

nicotine receptors

Answer 9

cholinergic receptors that also respond to nictone

Question 10

parasympathetic nervous system

Answer 10

“rest and digest” response that contains CNS cells from the cranium or sacral area of the spinal cord, long preganglionic axons, ganglia near or within the effector tissue, and short preganglionic axons that react with cholinergic receptors

Question 11

sympathetic nervous system

Answer 11

“fight or flight” response, composed of CNS cells from the thoracic or lumbar areas, short preganglionic axons, ganglia near the spinal cord, and long postganglionic axons that react with adrenergic receptors