Action Potential In Myocytes

Question 1

Phase 0

Answer 1

Rapid Na+ influx

Question 2

Phase 1

Answer 2

Closure of Na+ channels and transient K+ efflux

Question 3

Phase 2

Answer 3

Plateau phase
K+ channels close, Ca2+ influx through L-type Ca2+ channels

Question 4

Phase 3

Answer 4

Closure of Ca2+ channels and K+ efflux

Question 5

Phase 4

Answer 5

Resting membrane potential

Question 6

Refractory period

Answer 6

Period after action potential where another isn’t possible