Muscle

Muscle is a specialised soft tissue, one of the four basic types of animal tissues. There are three types of muscle tissues in vertebrates: skeletal muscle tissue, cardiac muscle tissue, and smooth muscle tissue. Muscle tissue gives skeletal muscles the ability to contract and relax.

Muscle tissue contains special contractile proteins called actin and myosin which interact to cause movement.
Among many other muscle proteins present are two regulatory proteins, troponin and tropomyosin.
Muscle is formed during embryonic development, in a process known as myogenesis.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 4.0

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Every species, image, fact, and figure is drawn from Wikipedia and Wikimedia Commons, used under public-domain and Creative Commons licenses. No content is AI-generated.