2017 Physiology - Autonomic Nervous System Flashcards Preview

2017 Semester 1 > 2017 Physiology - Autonomic Nervous System > Flashcards

Flashcards in 2017 Physiology - Autonomic Nervous System Deck (30):
1

What are some of the purposes of the autonomic nervous system?

Controls visceral function
Provides Homeostasis
Coordinates responses to external stimuli

2

What pharmacological agent(s) is the Carniosacral division on the ANS related to/use?

Cholinergic

3

What pharmacological agent(s) is the Thoracolumbar division on the ANS related to/use?

Adrenergic

4

Which cranial nerves are Parasympathetic?

3, 7, 9, 10

5

Which nerve is responsible for parasympathetics below the neck?

CNX - Vagus

6

Which nerves (Pre or Post-ganglionic) are long/short in Parasympathetic nerves?

Pre = long
Post = short (often in the target organ)

7

What structure does the Sympathetic Outflow Tracts utilize?

Paravertebral sympathetic chain ganglia
Prevertebral sympathetic chain ganglia

8

Which organ can have direct Sympathetic innervation without a ganglia?

The Adrenal Medulla - chromaffin cells

9

What are the two types of receptors of the Parasympathetic system?

Nicotinic and Muscarinic

10

What are the two types of receptors of the Sympathetic system?

Alpha
Beta

11

A1, M1, M3, M5 receptors share a common secondary messenger and G-proteins, what are they?

IP3, DAG to increase Ca++.
Gq receptor proteins

12

A2, M2, M4 receptors share a common secondary messenger and G-proteins, what are they?

Adenylate cyclase (inhibits) hence it inhibits cAMP
Gi receptor proteins

13

B receptors operate through which secondary messenger and G-protien?

Adenylate cyclase (activates) hence stimulates cAMP
Gs receptor proteins

14

What is the NT for ALL preganglionic neurons?

Acetylcholine (ACh)

15

What is the NT for somatic motor neurons (alpha and gamma) aka. muscles?

ACh

16

What NT is used by Parasympathetic postganglionic neurons on the target organ?

ACh

17

Where is the sympathetic-cholerneric effect seen?

Sympathetic preganglionic to sweat glands

18

What is the principle adrenergic NT?

Norepinephrine (NE)

19

What NT is released by sympathetic postganglionic neurons?

NE

20

What NT(s) is released by the Adrenal Medulla?

NE and Epi

21

Do the parasympathetic nerves stimulate anything outside of the viscera?

No, only the sympathetics do.

22

What type of receptor is on cell bodies of all postganglionic neurons in both symp and parasymp ganglia?

Nicotinic - Ng - N2

23

Parasympathetic: What type of receptor is on skeletal muscle?

Nm - N1

24

What type of receptor is on effector/target organs (glands, smooth muscle, cardiac muscle) except adrenal medulla?

Muscarinic

25

Are alpha 1 receptors pre or post junctional or both?

Only Pre

26

Are alpha 2 receptors pre or post junctional or both?

Both

27

What is tachyphlaxis?

Down regulation of a receptor based on the continued/overuse of a substance (or NT)

28

What are the functions of the Parasympathetic system? DEM BBLUESS

Defecation, emesis, miosis, bradycardia, bronchoconstriction, lacrimation, urination, erection, salivation, secretion

29

Which dominates (Para or Symp) if stimulated at the same time?

Parasympathetic

30

What organs/systems does the Sympathetic only exhibit control over?

Blood vessels
Sweat glands
Some sphincters