What is the proximal attachment of the short head of the biceps brachii?

What is the proximal attachment of the short head of the biceps brachii?

• A. Coronoid process of the ulna
• B. Coracoid process of the scapula
• C. Supraglenoid tubercle of the scapula
• D. Anterior surface of the humerus

Answer: (B)

The short head of the biceps brachii originates from the coracoid process of the scapula. This is a key anatomical landmark that serves as the proximal attachment for this muscle. The coracoid process is important not only as an attachment point but also for its role in providing stability and leverage during arm movements. The biceps brachii itself has two heads: the short head and the long head. While the long head attaches at the supraglenoid tubercle of the scapula, the short head's connection to the coracoid process plays a significant role in the muscle’s function, particularly in flexing the elbow and supinating the forearm. Understanding the specific origins of each muscle head can provide insights into their functions and the biomechanics of the shoulder and arm.

The short head of the biceps brachii originates from the coracoid process of the scapula. This is a key anatomical landmark that serves as the proximal attachment for this muscle. The coracoid process is important not only as an attachment point but also for its role in providing stability and leverage during arm movements.

The biceps brachii itself has two heads: the short head and the long head. While the long head attaches at the supraglenoid tubercle of the scapula, the short head's connection to the coracoid process plays a significant role in the muscle’s function, particularly in flexing the elbow and supinating the forearm. Understanding the specific origins of each muscle head can provide insights into their functions and the biomechanics of the shoulder and arm.