Which head of the biceps is contained in the inter tubercular groove?

The long head of the biceps brachii muscle is contained within the intertubercular groove of the humerus. This groove serves as a pathway for the long head, allowing it to run down from its origin at the supraglenoid tubercle of the scapula. The positioning of the long head in the intertubercular groove plays a crucial role in the muscle's function during shoulder movements, providing stability to the shoulder joint and enabling various arm functions.

In contrast, the short head of the biceps originates from the coracoid process of the scapula and does not pass through this groove. There are no distinct medial or distal heads of the biceps brachii; the muscle primarily consists of the long and short heads. Understanding the anatomy of the biceps and its relationship with the surrounding structures, such as the intertubercular groove, assists healthcare professionals and athletes in diagnosing and treating shoulder injuries effectively.