Muscular System

Muscle Function

How do muscle cells use calcium?

Calcium ions are stored inside muscle cells. The calcium ions are released from storage when a muscle cell gets a signal to induce contraction, which initiates the movement of the contractile proteins within muscles. When calcium concentrations fall, muscle contractions stop.


This is a web preview of the "The Handy Anatomy Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App