8. CIS Autonomics

Question 1

What is the main receptor parasympathetic NS uses?

Answer 1

muscarinic

Question 2

What is the main receptor sympathetic NS uses?

Answer 2

A/B adrenergic

Question 3

Smooth muscle on viscera can be constricted or relaxed, which receptor does what?

Answer 3

Alpha receptor contrictrs

Beta (2) receptor relaxes

Question 4

What would cause an increase in gland secretion?

Answer 4

Beta receptors becuase they relax muscle

Question 5

To increase the frequency of the HR, there is an increase need for O2 for the tissue, so there is an increase activity to SA/AV nodes. How is depolarization increased?

Answer 5

Inc. activity in the SA/AV nodes leads to increase in activity of B1 receptors leads to increase in slope phase 4 = increased depolarization

Question 6

When O2 is needed in tissues, stroke volume is increased. Thi is done increasing the activity to ventricular myocytes and then? (4)

Answer 6

1. Increase B1 adrenergic receptors
2. Increase Ca2+ into myocytes
3. Increase contractility
4. Increasing stoke volume

Question 7

During sympathetic response, kidneys, gut, skin and glands experience? (3)

Answer 7

1. Increase in alpha receptors
2. Increase in contraction and vasoconstriction
3. Redirects blood to tissues/brain heart lungs

Question 8

During sympathetic fight or flight response, we need to direct blood to the right tissues and or skeletal muscle. How do we do this? (3)

Answer 8

1. increase in B2 receptors on vascular smooth muscle
2. Causes relaxation and dialation
3. Increased blood flow to skeletal muscle

Question 9

What causes your pupils to dialte during sympathetic response?

Answer 9

sympathetic Alpha1 adrenergic fibers to radial muscle of eye cause it to constrict = pupils dialted to see more light

Question 10

What allows you to see further during sypathetic response?

Answer 10

B2 receptor activity increased, relaxing ciliary muscle = flattening of lense = increase far vision

Question 11

After hearing a gunshot and activating the sympathetic nervous system, there needs to be an increase in nutrients (glucose) to the tissues. What occurs in the liver/skeletal muscle? (3)

Answer 11

1. Alpha and beta receptors are activated
2. Increase in glycogenolysis
3. Increase in glucose for skeletal m

Question 12

After hearing a gunshot and activating the sympathetic nervous system, there needs to be an increase in nutrients (glucose) to the tissues. What occurs in the pancreas? (1)

Answer 12

Insulin production is decreased via ALPHA receptor

Question 13

After hearing a gunshot and activating the sympathetic nervous system, there needs to be an increase in nutrients (glucose) to the tissues. What occurs in adipose tissue? (3)

Answer 13

1. B receptors activated
2. Lipolysis
3. Increase in fatty acids to feed body except the muscles

Question 14

What happens to motility of the gut and sphincters during sympathetic response?

Answer 14

Decrease in motility of gut by B receptors (relax smooth m)

Increase constriction in sphincters via Alpha 1 (b/c they contract smooth muscle)

Question 15

What receptor is used for vasoconstriction (increasing BP) and to contract the radial muscle to dialate the pupil?

Answer 15

Alpha 1 receptor

Question 16

What receptor is used to relax ciliary muscles (flattening lens for far sight) and increase HR and contraction?

Answer 16

B2 (some B1)

Question 17

What receptor is used for bronchodialation and bronchoconstiction?

Answer 17

beta2 and Alpha 2

Question 18

What receptor/system will relax the raidal muscle and contrict ciliary muscles for near sight?

Answer 18

parasympathetic/muscarinic

Question 19

Which nervous system will increase motility of the GI, secretions and relax sphincters, and decrease HR?

Answer 19

Parasympathetic