Chapter 18

Question 1

The area of the brain that oversees all autonomic functions is the…

Answer 1

hypothalamus

Question 2

Postganglionic sympathetic fibers release this neurotransmitter

Answer 2

ACh or NE

Question 3

Postganglionic parasympathetic fibers release this neurotransmitter

Answer 3

ACh

Question 4

Involuntary control of visceral muscle

Answer 4

Autonomic Nervous System

Question 5

Voluntary control of skeletal muscle

Answer 5

Somatic Nervous System

Question 6

Prepares the body for stress

Answer 6

Sympathetic Divison

Question 7

Helps maintain homeostasis

Answer 7

Parasympathetic Divison

Question 8

The ANS consists of how many neurons in a pathway?

Answer 8

2

Question 9

Check all that occur at visceral effectors as a result of both parasympathetic and sympathetic innervation.
-Sympathetic stimulation increases the heart rate.
-Parasympathetic stimulation further increases the heart rate.
-Sympathetic innervation reduces blood flow to the GI tract.
-Parasympathetic stimulation increases activities relating to digestion of food.

Answer 9

-Sympathetic stimulation increases the heart rate.
-Sympathetic innervation reduces blood flow to the GI tract.
-Parasympathetic stimulation increases activities relating to digestion of food.

Question 10

True or False: The dual innervation on visceral effectors of both the sympathetic and parasympathetic divisions results in opposing effects.

Answer 10

True

Question 11

You are late for your Anatomy quiz and you run to class, causing an increase in blood pressure. Stretch receptors in the walls of large blood vessels are stimulated, causing a series of events that result in your body lowering your blood pressure. This general type of reflex is known as a(n) ____________ reflex.

Answer 11

autonomic