Question: Which muscle is found on the back of the arm and has three heads or points of origin?

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.

What is a muscle with three heads or attachments?

triceps muscle, any muscle with three heads, or points of origin, particularly the large extensor along the back of the upper arm in humans. … Its major action is extension of the forearm upon the elbow joint, in opposition to the biceps brachii.

What is the back of your forearm called?

The posterior compartment is located behind your humerus and consists of two muscles: Triceps brachii. This muscle, usually referred to as your triceps, runs along your humerus and allows for the flexion and extension of your forearm. It also helps to stabilize your shoulder joint.

What muscles are in your shoulder?

The primary muscle group that supports the shoulder joint is the rotator cuff muscles. The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis. Together the rotator cuff muscles form a musculotendinous cuff as they insert on the proximal humerus.

What are the three heads of the shoulder?

The deltoid muscle is the main muscle of the shoulder. It consists of three muscle heads: the anterior deltoid, lateral deltoid, and posterior deltoid.

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