Excess extracellular potassium functions to:(A) decrease the resting membrane potential of the ventricular contractile celle(B) decrease the force of contraction(C) initially increase the heart rate(D) A and B(E) all of the above CalciumSodiumPotassiumlonslonslons23°C Ringer's234567810Heart Rate (beats/min)Time (sec)Heart Activity30Heart Rate Changing

Answered: Excess extracellular potassium…

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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Related questions

Question

Excess extracellular potassium functions to:

(A) decrease the resting membrane potential of the ventricular contractile celle

(B) decrease the force of contraction

(D) A and B

(E) all of the above

Calcium
Sodium
Potassium
lons
lons
lons
23°C Ringer's
2
3
4
5
6
7
8
10
Heart Rate (beats/min)
Time (sec)
Heart Activity
30
Heart Rate Changing

Expert Solution

Step 1

The heart is part of the cardiovascular system that helps in transportation of blood. Deoxygenated blood is brought to it from different parts of the body. This deoxygenated blood leaves the heart and is taken to the lungs where the blood gets oxygenated and is brought back to the heart. The organ then pumps the oxygenated blood to all the parts of the body.