Cardiac contraction is graded by varying the strength of contraction of all the cardiac muscle cells by intrinsic and extrinsic control mechanisms.

Question

Cardiac contraction is graded by varying the strength of contraction of all the cardiac muscle cells by intrinsic and extrinsic control mechanisms.​

Quizplus · Accepted Answer

Cardiac contraction can be graded by varying the strength of contraction of all the cardiac muscle cells through intrinsic and extrinsic control mechanisms such as the Frank-Starling mechanism, autonomic nervous system, and hormones.

Cardiac Contraction Is Graded by Varying the Strength of Contraction