Pronator teres muscle

The Pronator teres muscle (pronounced as pro-nay-tor te-res) is one of the muscles of 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 "to turn face down" and "teres" refers to "round or cylindrical in shape".

Anatomy

The Pronator teres muscle originates from two heads - the humerus and the ulna. It inserts into the middle of the lateral surface of the radius, one of the two long bones in the forearm.

Function

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

Related Terms

Pronation: The action of turning the forearm so that the palm faces downwards.
Supination: The opposite action of pronation, turning the forearm so that the palm faces upwards.
Flexion: The action of bending or the condition of being bent.
Elbow: The joint connecting the forearm to the upper arm.
Forearm: The part of a person's arm extending from the elbow to the wrist or the fingertips.
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.

External links

Medical encyclopedia article on Pronator teres muscle
Wikipedia's article - Pronator teres muscle

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Pronator teres muscle