Biceps

Biceps

Biceps (/ˈbaɪsɛps/; Latin: biceps brachii, from biceps meaning "two-headed" and brachii meaning "of the arm") is a large muscle that lies on the front of the upper arm between the shoulder and the elbow.

Etymology

The term biceps brachii is a Latin phrase that means "two-headed [muscle] of the arm", in reference to the fact that the muscle consists of two bundles of muscle, each with its own origin, sharing a common insertion point near the elbow joint.

Anatomy

The biceps is one of three muscles in the anterior compartment of the arm, along with the brachialis muscle and the coracobrachialis muscle, with which the biceps shares a nerve supply, the musculocutaneous nerve. The biceps muscle has two heads, the short head and the long head, distinguished according to their origin at the coracoid process and supraglenoid tubercle respectively.

Function

The biceps works across three joints. The most important of these functions are to supinate the forearm and to flex the elbow. The biceps has several other minor functions, the most notable of which is to contribute to shoulder joint stability.

Related Terms

• Brachialis muscle
• Coracobrachialis muscle
• Musculocutaneous nerve
• Short head
• Long head
• Coracoid process
• Supraglenoid tubercle
• Supinate
• Flex
• Shoulder joint

External links

• Medical encyclopedia article on Biceps
• Wikipedia's article - Biceps

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