2. Intro to Autonomics

Question 1

The only exception of the two neuron arrangement of innervation is?

A. Sweat Glands
B Adrenal medulla 
C. Cardiac Muscle 
D. Nerve Terminals 
E. Pancreas

RFA

Answer 1

ANS.

B. Adrenal Medulla-easy one but need to know this Adrenal medulla nerves from spinal cord act directly on it.

Question 2

An agonistic drug increases secretory gland secreation what receptor is this drug working on?

A. M1
B. M2
C. M3
D. a1
E.a2
F.b1
G.b2

RFA

Answer 2

Ans. C M3- smooth muscle contraction, gland secretion and vasodilation

A. M1- CNS

B. M2- Heart inhibition

D. a1- vasoconstriction

E. a2- inhibitior

F. b1- heart contractility, increase renin

G.B2- bronchodilation, smooth muscle relastion, increase insulin secretion

Question 3

Nicotinic ACh receptors are ligand-gated ____ channels. (MG)

A. Na+/K+
B. Na+/Ca++
C. Ca++/K+
D. Cl-/Na+

Answer 3

A. Na+/K+

Question 4

With which class of drugs do you see negative feedback occurring at alpha2 autoreceptors? (MG)

A. Nicotinic
B. Muscarinic
C. Adrenergic
D. Noradrenergic

Answer 4

D. Noradrenergic

Question 5

Beta 1 and Beta 2 have the equal affinity for Epi and NE

A. True
B. False
C. IDK

SZ

Answer 5

B. False

Beta 1 and Beta 3 have equal affinity for Epi and NE.

Beta 2 has a higher affinity for Epi than NE.

Question 6

Alpha 2 receptor stimulation would do which of the following?

A. Increase HR
B. Increase Insulin Secretion
C. Decrease Insulin Secretion
D. Increase Glycogenolysis
E. Increase Lipolysis

SZ

Answer 6

Ans. C Decrease insulin secretion