The origin of a muscle is the point at it attaches to a bone (usually) or another muscle. The structure that the origin is attached to is not moved by the contraction of the muscle^[1]. The opposite end of the muscle is called the insertion. A top-down view of skeletal muscle Muscle (from Latin musculus little mouse [1]) is contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. ... Grays Anatomy illustration of a human femur. ... Contraction can mean: Contraction (childbirth), a contraction during childbirth; Contraction (linguistics), a new word formed from two or more individual words; Contraction (science), one that can occur to solid matter as it cools; Contraction mapping, in mathematics, a type of function on a metric space; Muscle contraction, one that occurs...

References

1. ^ Martini, Frederic; William C. Ober, Claire W. Garrison, Kathleen Welch, and Ralph T. Hutchings (2001). Fundamentals of Anatomy and Physiology, 5th Ed.. Prentice Hall.