What happens when a muscle contracts? Learn about the muscle contraction process and the role of the proteins actin and myosin in muscle contraction, as well as the types of muscle contraction and ...

Dec 4, 2025 · In this lesson, we will explore how muscle contraction and relaxation takes place, address the role & importance of calcium in this process, and...

The cross-bridge muscle contraction cycle is recognized in all types of muscles, such as cardiac, smooth, and skeletal muscles. This means that all muscle types contract by cross-bridge cycling.

Learn about the length-tension and force-length relationship and why they are important to skeletal muscle. Discover examples of the length-tension curve.

Learn what excitation-contraction coupling is. Discover key actors in muscle contraction and identify the steps of the muscle contraction and relaxation process.

Myosin molecules interact with actin filaments, a component of the cytoskeleton. When bound to actin, myosin uses energy from ATP to pull on actin and cause a muscle contraction.

Learn about the importance of ATP, the roles of creatine phosphate and creatine phosphokinase in muscle metabolism, and the function of glycolysis.

This lesson will explain the role of hydrolysis of ATP in heat production and muscle contraction and explore how skeletal muscle contraction generates heat in support of temperature homeostasis.

Discover the primary function of a wave summation. Learn about muscle twitches, examine the varying stages, and understand how a twitch contraction...

Acetylcholinesterase, also called AChE enzyme, is a cholinergic enzyme located in the synapse between animal nerve and muscle cells. Acetylcholinesterase can also be found between two nerve …