The positive ionotropic effect on myocardial contractility produced by the release of norepinephrine from sympathetic nerve endings is an example of:

Question

Quizplus · Accepted Answer

The extrinsic control of contractility depends on the activity of the sympathoadrenal system.Epinephrine from the adrenal medulla and norepinephrine from the sympathetic nerve endings produce a positive ionotropic effect,or increase myocardial contractility by promoting an influx of calcium available to the sarcomeres of the myocardial cells.

The Positive Ionotropic Effect on Myocardial Contractility Produced by the Release