Which muscle has its proximal attachment at the coracoid process of the scapula?

The coracobrachialis muscle is correctly identified as having its proximal attachment at the coracoid process of the scapula. This small muscle plays an important role in shoulder flexion and adduction. It originates from the coracoid process, which is a small, hook-like bony projection on the scapula, and inserts onto the mid-shaft of the humerus.

The positioning and function of the coracobrachialis highlight its role in stabilizing the shoulder joint and assisting with arm movements towards the body. Understanding this muscle's anatomy and proximal attachment helps in comprehending its functional contributions to shoulder mechanics.