pennate muscle

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pen·nate mus·cle

a muscle with a central tendon toward which the fibers converge on either side like the barbs of a feather.
See: semipennate muscle.
References in periodicals archive ?
In pennate muscle, changes in muscle size may also depend upon changes in fibre pennation angle which becomes greater (more perpendicular to the tendon) during contraction.
By design, the total capacity for tension development is enhanced in pennate muscle by having more sarcomeres arranged in parallel and fewer in series within a given volume of muscle.