The sarcoplasmic reticulum stores which substance when a muscle is relaxed, and releases it for binding to which substance during contraction

Question

Quizplus · Accepted Answer

The sarcoplasmic reticulum in muscle cells stores calcium ions when the muscle is relaxed, and releases them into the cytosol during muscle contraction. The released calcium ions bind to the tropomyosin molecule, causing a conformational change that allows myosin and actin to interact and generate force.

The Sarcoplasmic Reticulum Stores Which Substance When a Muscle Is