Autonomic Nervous System

Question 0

What kind of control does the ANS have?

Answer 0

Involuntary, subconscious

Question 1

What kind of neurons are in the ANS?

Answer 1

Only motor neurons

Question 2

What 3 things does the Ans control?

Answer 2

Cardiac muscle
Smooth muscle
Glands

Question 3

What does the ANS release and why?

Answer 3

Norepinephrine and acetylcholine they can be inhibitory or excitatory

Question 4

Sympathetic?

Answer 4

Norepinephrine “fight/flight” “e” exercise, excitement embarrassment emergency.

Question 5

Effect of sympathetic

Answer 5

Digestion stops

Heart rate, metabolic rate, respiration all increase

Question 6

Parasympathetic?

Answer 6

AcH “rest/digest” digest defecate dieresis

Question 7

Effects of parasympathetic?

Answer 7

Heart rate blood pressure and respiratory rates are slow pupils constrict

Question 8

Parts of reflex arc

Answer 8

Receptor-sensory neuron- integration- motor neuron- effector

Question 9

Difference between visceral and somatic reflex arc?

Answer 9

Visceral has 2 neurons in the motor pathway (para and sympathetic)
Also visceral sensory receptor is in an organ vs the skin

Question 10

Why is there referred pain?

Answer 10

Because visceral pain travels along the same pathway as somatic pain fibers

Question 11

What is dynamic antagonism?

Answer 11

The para and sympathetic divisions work together but oppose each other
It allows for precise control over visceral activity

Question 12

Sympathetic Tone:

Answer 12

Sympathetic always controls blood pressure so it keeps blood vessels in a continuous state of partial constriction

Question 13

What to do if we need blood pressure to rise?

Answer 13

The sympathetic fibers fire more rapidly to constrict blood vessels

Question 14

What to do if we need to lower blood pressure?

Answer 14

Sympathetic fibers fire less rapid to dilate blood vessels

Question 15

So wat r alpha-blocker drugs

Answer 15

They interfere with vasomotor fibers and are used to treat hypertension

Question 16

Parasympathetic tone?

Answer 16

Usually dominates heart rate and smooth muscle of digestive system. Controls all glass but the adrenal and sweat glands. IN LIFE OR DEATH THE SYMPATHETIC CAN OVERRIDE THIS. Drugs that block this increase heart rate and disallow peeing/ pooping

Question 17

What are cooperative effects?

Answer 17

Erections- if one doesn’t work then the other doesn’t

Question 18

Which is localized vs. diffuse

Answer 18

Para is localiZed and short lived control

Sympathetic is long lasting and body wide bc. Norepinephrine takes longer to break down