Pharma/Physiology

Question 1

what is the most common excitatory neurotransmitter in the CNS?

Answer 1

glutamate

Question 2

what is the most common inhibitory neurotransmitter in the CNS?

Answer 2

GABA/glycine

Question 3

does sodium ion entry into a cell have an inhibitory or excitatory effect?

Answer 3

excitatory

Question 4

does calcium ion entry into a cell have an inhibitory or excitatory effect?

Answer 4

excitatory

Question 5

does chloride ion entry into a cell have an inhibitory or excitatory effect?

Answer 5

inhbitory

Question 6

does potassium ion exit from a cell have an inhibitory or excitatory effect?

Answer 6

inhibitory

Question 7

where do ionotropic receptors lie in relation to the channel they are gating?

Answer 7

Receptor is part of the channel itself

Question 8

where do metabotropic receptors lie in relation to the channel they are gating?

Answer 8

receptor is at a distinct site from channel

Question 9

what ions do non-NMDA ionotropic receptors control?

Answer 9

Na+ and K+

Question 10

what ions do NMDA ionotropic receptors control?

Answer 10

Na+, Ca2+ and K+

Question 11

what ion channel do ionotropic GABAa receptors operate?

Answer 11

Cl-

Question 12

what ion channel do metabotropic GABAb receptors operate?

Answer 12

K+

Question 13

what ion channel do ionotropic glycine receptors operate?

Answer 13

Cl-

Question 14

are ionotropic or metabotropic faster at gating ion channels?

Answer 14

ionotropic (ms)

metabotropic tens of ms

Question 15

what types of sensation does the somatosensory NOT mediate?

Answer 15

visual
auditory 
gustatory 
olfactory
vestibular

Question 16

Do Pacinian or Meissners corpuscles deal with higher frequencies?

Answer 16

Pacinian

Question 17

from what spinal level does the fasciculus gracilis carry information from?

Answer 17

T6 down

Question 18

What are the capabilities of the DCML?

Answer 18

stereogenesis
vibration
fine touch
conscious proprioception
weight discrimination