Images

Question 1

Question 2

What are the numbered positions in this graph of a cardiac action potential? What part of heart?

Answer 2

0. upstroke
1. notch
2. plateau
3. repolarization
4. resting potential

Ventricular action potential

Question 3

What are the numbered positions in this graph of a cardiac action potential? What part of heart?

Answer 3

0. upstroke
1. plateau
2. repolarization
3. resting potential

SA Node AP

Question 4

What type of ion follow does this show given that the voltage range is -80 to 80?

Answer 4

K+ flow outward

Question 5

What type of ion[s] is this likely to be [voltage range -80 to +80]?

Answer 5

Na or Ca

Not K!