Autonomic Nervous System

Question 1

What is the autonomic nervous system?

Answer 1

Involuntary branch of the nervous system
To maintain homeostasis

Question 2

What is homeostasis?

Answer 2

Balance, everything in its place

Question 3

What are the two divisions of the autonomic nervous system?

Answer 3

Sympathetic and parasympathetic

Question 4

T/F: Sympathetic and parasympathetic systems involve a 2-neuron chain

Answer 4

True

Question 5

What are the 2 neurons in this neuron chain?

Answer 5

The first neuron is called the pre-ganglionic neuron and the second is called the post-ganglionic neuron

Question 6

What is the pre-ganglionic neuron?

Answer 6

It is a neuron that lies before a bundle of cell bodies
It typically has a cell body in the lateral horn of the spinal cord

Question 7

What is the post-ganglionic neuron?

Answer 7

It is a neuron that lies after a bundle of cell bodies
It typically has a cell body in the peripheral autonomic ganglion

Question 8

What response does the sympathetic nervous system cause?

Answer 8

Fight or flight

Question 9

What does the sympathetic nervous system do?

Answer 9

Prepare the body for strenuous activity

Question 10

What response does the parasympathetic nervous system cause?

Answer 10

Rest and digest

Question 11

What does the parasympathetic nervous system do?

Answer 11

Decrease state of alertness and prepare for digestion

Question 12

What is the enteric nervous system?

Answer 12

Nerve plexuses innervating intestinal smooth muscle
Gut motility

Question 13

Are sympathetic and parasympathetic always equal and opposite?

Answer 13

No, but they do push and pull

Question 14

What does sympathetic stimulation do to the heart?

Answer 14

Increases heart rate and force of contraction

Question 15

What does the sympathetic nervous system do to the blood vessels?

Answer 15

Sends blood to heart and muscles (dialation) and constricts others

Question 16

What does the sympathetic nervous system do to the airways?

Answer 16

Dilation to get more air in

Question 17

What does the sympathetic nervous system do to the digestive tract?

Answer 17

Stops

Question 18

What does the sympathetic nervous system do to the eyes?

Answer 18

Pupillary dilation and flattening of lenes to see enemies

Question 19

What does the sympathetic nervous system do to the sweat glands?

Answer 19

Stimulation

Question 20

What does the sympathetic nervous system do to the genitalia?

Answer 20

Ejaculation and orgasm

Question 21

What does the sympathetic nervous system do to the brain?

Answer 21

Increase alertness

Question 22

What does the parasympathetic nervous system do to the heart?

Answer 22

Decrease heart rate and force of contraction

Question 23

What does the parasympathetic nervous system do to the blood vessels?

Answer 23

Dilation of blood vessels of sexual organs

Question 24

What does the parasympathetic nervous system do to the airways?

Answer 24

Constriction

Question 25

What does the parasympathetic nervous system do to the digestive tract?

Answer 25

Ready to process food

Question 26

What does the parasympathetic nervous system do to the eye?

Answer 26

Pupillary constriction and rounding of lens for near vision

Question 27

What does the parasympathetic nervous system do to the sweat glands?

Answer 27

No effect

Question 28

What does the parasympathetic nervous system do to the genitalia?

Answer 28

Erection

Question 29

What does the parasympathetic nervous system do to the brain?

Answer 29

No effect