Question
Physiology Question on Cardiovascular system
Identify the true statement regarding the point marked(Red) on the myocardial action potential curve?
A
Due to the opening of Na+ and closure of fast K+ channels
B
Due to the slow but prolonged opening of Ca2+ channels
C
Due to the closure of Na+ and opening of the slow K+ channel
D
Due to Na+/K+ ATPase
Answer
Due to the slow but prolonged opening of Ca2+ channels
Explanation
Solution
The correct option is (B): Due to the slow but prolonged opening of Ca2+ channels