Lec 2 Chemical and Electric Signals Flashcards Preview

Dental Physiology > Lec 2 Chemical and Electric Signals > Flashcards

Flashcards in Lec 2 Chemical and Electric Signals Deck (22):
1

when a neuron is at a resting potential of -70 mV, neither potassium nor sodium is at blank

equilibrium? ok

2

driving force generated by a concentration difference and applies to all charged and uncharged molecules

diffusive chemical

3

driving force generated by a potential difference in an electrical field and only applies to charged particles

electrical

4

answer of nernst equation gives us the blank

equilibrium potential

5

g is aka

conductance

6

conductance can increase due to these two thing

larger channel, more channels

7

depolarization occurs via opening blank channels and closing blank channels

sodium, potassium

8

shunting inhibition example

chloride channels being open keeps cell at -70 mV because that is its equilibrium potential

9

equilibrium potential of sodium

+60

10

equilibrium potential of potassium

-90

11

three types of gated channels

voltage, ligand, mechanically

12

sodium channel has blank domains that each have blank TM segments

four, six

13

potassium channel has one blank TM peptide

6

14

unique 6 TM channel that can detect environmental clues

TRP

15

equilibrium potential for the ion is aka the blank

nernst potential

16

Loop of 6 transmembrane channel that is the selectivity filter

P loop

17

ENaC is an epithelium sodium channel is always blank

Open

18

Receptors that bind ligand and rapidly activate channel because channel is part of the receptor

Ionotropic

19

Receptors that bind ligand slowly and activate a g protein

Metabotropic receptors (GPCR)

20

Excitatory ionotropic receptors

Glutamate, Ach

21

Inhibitory ionotropic receptors

Gaba, glycine

22

G protein coupled receptor does not have a blank

Channel

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