Muscle (from Latin musculus, diminutive of mus "mouse" [1]) is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells.

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Skeletal muscle is a form of striated muscle tissue existing under control of the somatic nervous system. It is one of three major muscle types, the others being cardiac and smooth ...

Introduction to MUSCLE: MUSCLE is public domain multiple alignment software for protein and nucleotide sequences. MUSCLE stands for multiple sequence comparison by log ...

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Muscles are your body’s engine, and you couldn’t do anything without them. Learn about skeletal muscle, smooth muscle, and cardiac muscle and how muscle contraction works.

muscle /mus·cle/ (mus´'l) an organ which by contraction produces movement of an animal organism. abductor muscle of great toe origin, medial tubercle of calcaneus, plantar fascia ...

muscle n. A tissue composed of fibers capable of contracting to effect bodily movement. A contractile organ consisting of a special bundle of muscle

When you make a muscle in your arm, you tense your biceps (say: bye-seps) muscle. When you contract your biceps muscle, you can actually see it push up under your skin.