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The system in the body composed of muscle cells and tissues that bring about movement of an organ or part of the body.

Contributors in Muscular


pronator quadratus

Anatomy; Muscular

The square shaped muscle on the distal forearm that acts to pronate (turn so the Palm faces downwards) the hand.

Ventricular fibrillation

Anatomy; Allergies and allergens

An erratic, disorganised firing of impulses from the ventricles. The ventricles quiver and are unable to contract or pump blood to the body. This is a medical emergency that must be treated with ...

Action potential

Anatomy; Muscular

The change in voltage that occurs across the membrane of a nerve cell.


Anatomy; Muscular

A protein, found in muscles, that plays an important role in the process of contraction.


Anatomy; Muscular

Any muscle that moves one part of the body away from another or from the midline of the body.


Anatomy; Muscular

A muscle that is situated at the front of the upper arm and contracts to flex the forearm.

Deltoid muscle

Anatomy; Muscular

The trapezius muscle is a flat, triangular muscle that covers the back of the neck, shoulders and thorax. The upper and lower fibres are important to the orientation of the shoulder blade (scapula). ...

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