An insertion is where a tendon or a muscle enters the moving bone in a muscle contraction. For example, in one's arm, the bicep's insertion is in the lower arm.
See also: Origin

In*ser"tion (?), n. [L. insertio: cf. F. insertion. See Insert.]


The act of inserting; as, the insertion of scions in stocks; the insertion of words or passages in writings.


The condition or mode of being inserted or attached; as, the insertion of stamens in a calyx.


That which is set in or inserted, especially a narrow strip of embroidered lace, muslin, or cambric.

4. Anat.

The point or part by which a muscle or tendon is attached to the part to be moved; -- in contradistinction to its origin.

Epigynous insertion Bot., the insertion of stamens upon the ovary. -- Hypogynous insertion Bot., insertion beneath the ovary.


© Webster 1913.

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