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 ...

A sarcomere is a basic unit of function within muscle tissue. The contract with the use of thick and thin filaments in order to allow muscle to shorten or contract. What does myofibril mean?

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 how muscle contraction works in our detailed video lesson. Explore the process, types, and proteins involved, then test your knowledge with a short quiz.

Jan 8, 2026 · In this lesson, we will explore how muscle contraction and relaxation takes place, address the role & importance of calcium in this process, and...

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 the difference between agonist and antagonist muscles in this 5-minute video lesson. Understand how contractions work and test your knowledge with a quiz.

The same applies to muscle cells that contract with the same force regardless of the strength of impulse causing contraction.

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.

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