In a skeletal muscle contraction, which of the following acts to allow the crossbridge cycle to occur when it flows into the cytosol through open ion channels?

Question

Quizplus · Accepted Answer

The correct choice is D) Ca2+, which is a typographical error for calcium ions (Ca2+). Calcium ions flow into the cytosol through open ion channels during muscle contraction, initiating the crossbridge cycle by binding to troponin, which causes a conformational change in tropomyosin, exposing the myosin-binding sites on actin filaments.

In a Skeletal Muscle Contraction, Which of the Following Acts