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Flashcards in Cellular Communication Deck (13):
1

What percentage of the body's total body water is intracellular?

65%

2

What percentage of the body's total body water is extracellular?

30%

3

What percentage of the body's total body water is transcellular?

2-3%

4

What percentage of the body's total body water is interstitial?

25%

5

What percentage of the body's total body water is plasma?

8%

6

What is the extracellular concentration of each of Na+ and Cl- ?

150mM

7

What is the intracellular concentration of K+?

100mM

8

At what voltage range are Na+v channels inactivated?

+35 to -90mV, delayed

9

At what voltage range are Na+v channels are resting?

-90mV

10

At what voltage range are Na+v channels are activated?

-90 to +35mV

11

What are K2P channels activated by?

pH, stretch, volatile anaesthetics (TREK1),arachidonic acid

12

Do Gs channels cause relaxation or contraction?

Contraction, via increased cAMP.

13

Do Gi channels cause relaxation or contraction?

Relaxation, via decreased cAMP.