The coracobrachialis muscle is a muscle located in the upper arm. It is a small, triangular-shaped muscle located on the medial (inner) aspect of the elbow. The coracobrachialis muscle is responsible for flexing the elbow joint and adducting the arm. Flexion of the elbow joint means that the coracobrachialis helps to bend the arm at the elbow, bringing the hand closer to the shoulder. Adduction of the arm means that the coracobrachialis helps to move the arm towards the midline of the body. These movements are important for activities such as bringing the hand to the mouth or holding an object close to the body.

The coracobrachialis muscle originates from the coracoid process of the scapula bone, and inserts onto the medial aspect of the humerus bone. It is located just below the biceps brachii muscle, which is the larger muscle responsible for flexing the elbow joint.

One example of how the coracobrachialis muscle is used is when you bring your hand to your mouth to take a bite of food. To do this, you need to flex your elbow joint and adduct your arm, which is facilitated by the coracobrachialis muscle working together with the biceps brachii muscle. This movement allows you to bring the food to your mouth with ease and control.

Some examples include: