bipennate muscle

Examples of bipennate muscle in the human body are:

Bipennate muscle is stronger than unipennate muscle and fusiform muscle, due to a larger physiological cross-sectional area.

Bipennate muscle shortens less than unipennate muscle but develops greater tension when it does, translated into greater power but less range of motion.

The stapedius in the middle ear of humans, as well as the rectus femoris of the quadriceps are examples of bipennate muscles.

A bipennate muscle is a pennate muscle type that consists of two rows of oblique muscle fibres, facing in opposite diagonal directions, converging on a central tendon.

In addition, it can be trimmed for the correct size and volume with preservation of superior contraction qualities compared to bipennate muscles, because the gracilis is a parallel-fibered or strap muscle.

Parallelogram models predict that total PCSA of bipennate muscles increases in proportion to sin(θpennation) while total force exerted on the associated aponeurosis decreases with cos(θpennation).