| Pra'i t Pk- (transient) | Pca, L; I P- (both transient and leaky) k*out fast +30 Ca2+ in slow Plateau phase of action potential | Pca", L; 1 Pk (ordinary voltage-gated) Threshold t Pra - 70 potential | Pk- (ordinary voltage-gated); t Pk- (leaky) - 90 250 Time (msec) of the heart. The action potential shown here could appear in the SA node conducting cells of the ventricles I've never seen this shape in my life. O AV node contractile cells of the ventricles K* out fast Na* in fast
| Pra'i t Pk- (transient) | Pca, L; I P- (both transient and leaky) k*out fast +30 Ca2+ in slow Plateau phase of action potential | Pca", L; 1 Pk (ordinary voltage-gated) Threshold t Pra - 70 potential | Pk- (ordinary voltage-gated); t Pk- (leaky) - 90 250 Time (msec) of the heart. The action potential shown here could appear in the SA node conducting cells of the ventricles I've never seen this shape in my life. O AV node contractile cells of the ventricles K* out fast Na* in fast
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:| PNa'i Pk: (transient)
| Pca, L; | PK: (both transient and leaky)
out fast
+30
Ca2+ in slow
Plateau
phase of
action
potential
| Pca, L; 1 Pk
(ordinary
voltage-gated)
Threshold
potential
| PNa
- 70-
| Pk: (ordinary
voltage-gated);
1 Pk: (leaky)
- 90
-250
Time (msec)
of the heart.
The action potential shown here could appear in the
SA node
conducting cells of the ventricles
I've never seen this shape in my life.
AV node
contractile cells of the ventricles
K* out fast
Na* in fast
Transcribed Image Text:+20-
+10
1 PK; | Pca, L
Self-induced
action potential
아
- 10
-20
Threshold
-3아 tPcat", L;
-40
i Pca,T
potential
Ca2+
in
-5아
Pca, T;
| PNa', 4
Na*
in
-6아
| PNa', 4i
PK
Slow
depolarization
(pacemaker
potential)
Time (msec)
The action potential shown here could appear in
of he heart.
a cell of the left AV valve
a conducting cell of the right atrium
a contractile cell of the ventricles
a contractile cell of the right atrium
Membrane potential (mV)
Ca2+ in
K*out
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