With the four-legged mammals the muscle only one origin at the Tuberculum possesses supraglenoidale Scapula and thus only one head, however from compare-anatomical view as (biceps) is nevertheless designated.

Function

The Bizeps supiniert the lower arm (turn of the lower arm, so that the thumb rotates from the inside outward around the hand). Further it bends the supinierten lower arm at the elbow.

The long head abduziert (lifts from the thorax), the short head adduziert (leads to the thorax) the arm in the shoulder joint. Both heads work to the Anteversion (lead the arm forward) as well as at the interior rotation also.

With the four-legged mammals the muscle works as Strecker of the shoulder joint and strong Beuger of the elbow. Rotating motion does not play a role with them.

It is somewhat weaker the Synergist of the Musculus brachialis and than it and the strongest Supinator of the lower arm.

Sometimes there is a third muscle head, which is covered by the Deltoideus.

Articles in category "Musculus biceps brachii"

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