Multiple Choice
The rising phase of a cardiac pacemaker action potential is caused by a __________ current.
A) potassium
B) sodium
C) chloride
D) calcium
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q18: During the flight or fight response,sympathetic pathways
Q19: The end-diastolic volume is<br>A) the maximum volume
Q20: The vertebrate heart muscle is known as<br>A)pericardium.<br>B)epicardium.<br>C)myocardium.<br>D)endocardium.
Q21: In most non-crocodilian reptiles,the ventricle is divided
Q22: Which of the following is NOT one
Q24: The contractility of the heart can be
Q25: Electrical signals move through the mammalian heart
Q26: What is hydrostatic pressure?<br>A)pressure exerted by a
Q27: What is believed to be the major
Q28: What types of blood cells are involved