The triceps, also triceps brachii (Latin for “three-headed muscle of the arm”), is a large muscle on the back of the upper limb of many vertebrates. It consists of 3 parts: the medial, lateral, and long head. It is the muscle principally responsible for extension of the elbow joint (straightening of the arm).
What are the triceps?
Triceps muscle, any muscle with three heads, or points of origin, particularly the large extensor along the back of the upper arm in humans. It originates just below the socket of the scapula (shoulder blade) and at two distinct areas of the humerus, the bone of the upper arm.
What part of the body is triceps?
The triceps brachii is a large, thick muscle on the dorsal part of the upper arm. It often appears as the shape of a horseshoe on the posterior aspect of the arm. The main function of the triceps is the extension of the elbow joint.
Why is it called a triceps?
The triceps brachii is the muscle that runs down the back of the humerus, which is the long bone of the upper arm, and ends at the top of the ulna, which is the long bone of the forearm. The triceps brachii gets its name because it contains three muscle ‘heads’ or points of origin.
What does triceps mean in medical terms?
Triceps: The muscle that extends (straightens) the forearm. The triceps can be felt as the tense muscle in the back of the upper arm while one is doing push-ups. … Its full name is the triceps brachii.
What are strong triceps good for?
Working out your triceps helps to build upper body strength and is an essential part of any strength training routine. Strong triceps stabilize your shoulder joint and are important for daily activities and sports such as tennis, volleyball, and basketball.
What movement does the triceps Brachii perform?
The main function of triceps brachii is extension of the forearm at the elbow joint. In addition, its long head contributes to the extension and adduction of the arm at the shoulder joint.
What are the 3 heads of the triceps?
Triceps brachii (TB) is the largest arm muscle responsible for elbow extension and horizontal arm abduction and also participates as an antagonist muscle during elbow flexion (Hussain et al., 2018). This muscle comprises three heads, namely, the long, lateral and medial heads.
How do the triceps work?
Function. The triceps is an extensor muscle of the elbow joint and an antagonist of the biceps and brachialis muscles. It can also fixate the elbow joint when the forearm and hand are used for fine movements, e.g., when writing.
Why are biceps called triceps?
They derive their name from a Latin phrase meaning “three headed arm muscle”, due to the fact that the triceps muscles have three muscle heads and therefore have three separate origin attachment points. … Biceps and triceps are opposite functioning muscles.
What are the 2 functions of the triceps?
The main function of the triceps brachii muscle is to extend the forearm at the elbow joint, which means it functions to straighten the arm. Additionally, this muscle functions to pull the upper arm toward the body (adduction) and pull the upper arm backward (extension).
Are triceps important?
People often associate biceps with “big gun” arms, but in reality the triceps are far more important for sports performance—and arm size overall. … The triceps also are important for stabilizing the shoulder joints, and a well-trained triceps can help prevent certain types of shoulder injuries.
How do biceps and triceps move the arm?
The biceps is the flexor, and the triceps is the extensor of your elbow joint. … The biceps and triceps act against one another to bend and straighten the elbow joint. To bend the elbow, the biceps contracts and the triceps relaxes. To straighten the elbow, the triceps contract and the biceps relax.
What is a bicep?
The biceps is a muscle on the front part of the upper arm. The biceps includes a “short head” and a “long head” that work as a single muscle. The biceps is attached to the arm bones by tough connective tissues called tendons.