Brain Neurotransmitter Systems

Question 1

What type of ion channel is the GABA channel?

Answer 1

Cl-

Question 2

Two types of channels

Answer 2

ionotropic (fast)

metatropic (slow–G-protein coupled)

Question 3

GABA: inhibitory or excitatory?

Answer 3

inhibitory

Question 4

Postsynaptic glutamate receptors: inhibitory or excitatory

Answer 4

excitatory

Question 5

Presynaptic glutamate receptors: inhibitory or excitatory?

Answer 5

inhibitory

Question 6

Glycine as NT

Answer 6

inhibitory in CNS

Question 7

Action of nAChR

Answer 7

open sodium channel

Question 8

Action of mAChR

Answer 8

metabotropic improves memory (inhibitory)

Question 9

Two types of dopamine receptors

Answer 9

D1 and D2

Question 10

D1 receptors + disease

Answer 10

Gs (stimulatory)
increases cAMP production
Tourrette’s

Question 11

D2 receptors + disease

Answer 11

Gi (inhibitory)
decreases cAMP production
Parkinsons

Question 12

How does norepinephrine act on alpha-2 receptors?

Answer 12

increases K+ conductance

hyperpolarizes cells

Question 13

Agonists of norepinephrine on alpha-2 receptors

Answer 13

muscle spasmalytics