Pronator teres

Pronator Teres

The Pronator Teres (/proʊˈneɪtər ˈtɛrɪs/) is a muscle located in the forearm that plays a crucial role in the rotation of the forearm and the flexion of the elbow.

Etymology

The term "Pronator Teres" is derived from Latin, where "pronator" means "one who turns palm downward" and "teres" means "round". This is in reference to the muscle's function and shape.

Anatomy

The Pronator Teres is one of the muscles in the superficial layer of the anterior compartment of the forearm. It originates from the medial epicondyle of the humerus and the coronoid process of the ulna, and inserts into the middle of the lateral surface of the radius.

Function

The primary function of the Pronator Teres is to pronate the forearm, turning the hand so that the palm faces downwards. It also assists in the flexion of the elbow.

Related Terms

Pronation: The act of turning the palm downwards or backwards.
Supination: The opposite of pronation, turning the palm upwards or forwards.
Flexion: The act of bending a joint or limb in the body by the action of flexors.
Humerus: The bone of the upper arm or forelimb, forming joints at the shoulder and the elbow.
Ulna: The thinner and longer of the two bones in the human forearm, on the side opposite to the thumb.
Radius: The thicker and shorter of the two bones in the human forearm.