The sensitivity of the smooth muscle contractile apparatus to calcium can increase. This increase in calcium sensitivity can be attributed to a decrease in the levels of which of the following substances?

Question

Quizplus · Accepted Answer

Myosin light chain phosphatase is responsible for the dephosphorylation of myosin, which decreases the calcium sensitivity of the contractile apparatus. Therefore, a decrease in the levels of myosin light chain phosphatase would result in an increase in calcium sensitivity.

The Sensitivity of the Smooth Muscle Contractile Apparatus to Calcium