Question

Which of the following statements about conducting system of the heart is INCORRECT ?
I. Mass of nodal tissue seen in the lower-left corner of the right atrium is the sinoatrial node.
II. The nodal musculature can generate action potentials only in response to external stimuli .
III. The number of action potential that could be generated in a minute varies at different parts of the nodal system .
IV. The SAN can generate the maximum number of action potential , i.e., 80-85 `min^(-1)`

Answer 1

Answer:

PLEASE MARK AS BRAINLIEST

Explanation:

A

I, II , III and IV

B

I, II and IV

C

II, III and IV

D

I,II and III

Answer

B