Muscle
Muscles are body tissues that contract to produce movement and maintain posture.
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Shreya Agarwal
First written 20 Aug 2025
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Muscles are soft tissues in the body that contract and relax to produce movement, maintain posture and power vital functions.
Types
There are three kinds: skeletal muscles that move the bones, smooth muscles in organs such as the stomach, and cardiac muscle that makes the heart beat.
How they work
Muscles work by contracting, often pulling on bones across joints. Many work in pairs, one pulling as the other relaxes.
Frequently asked questions
What do muscles do?
They contract to create movement and support the body.
What are the three types of muscle?
Skeletal, smooth and cardiac.