Criado por Victoria Wright
mais de 7 anos atrás
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Describe Phase 0
Describe Phase 1
Describe Phase 2
Describe Phase 3
Describe Phase 4
During Phase 0, there is rapid _________ and _________
During Phase 0, voltage-gated NA+ channels _________
During Phase 1, there is _________ of voltage gated Na+ channels.
During Phase 1, voltage-gated _________ begin to open
During Phase 2, Ca2+ influx through voltage-gated Ca2+ channels balances _________
During phase 2, _________ influx triggers Ca2+ release from sarcoplasmic reticulum and myocyte contraction.
During phase 2, Ca2+
influx triggers Ca2+ release from
_________ _________ and
_________ _________
During phase 3, massive _________ due to opening of voltage-gated slow K+
channels and closure of voltage-gated Ca2+ channels.
During phase 3, massive K+ efflux due to opening of voltage-gated slow K+
channels and closure of _________
During phase 4, high K+ permeability through _________
Cardiac muscle action potential has a plateau which is due to what?
Cardiac muscle contraction requires what to induce Ca2+ release from sarcoplasmic reticulum (Ca2+-induced Ca2+ release)?
Cardiac muscle contraction requires Ca2+ influx from ECF to induce what?
Cardiac myocytes are electrically coupled to each other by what?
What are electrically coupled to each other by gap junctions?