What is the insertion point of the brachialis muscle?

The insertion point of the brachialis muscle is the ulna. This muscle is primarily responsible for flexing the elbow joint, and it originates from the anterior surface of the humerus, inserting specifically at the coronoid process of the ulna. The placement of the brachialis on the ulna allows it to effectively facilitate flexion even when the forearm is in a pronated position, which sets it apart from other elbow flexors like the biceps brachii that have a more complicated action because of their attachment to the radius.

The other options pertain to various anatomical structures but do not represent the correct insertion of the brachialis muscle, illustrating how the choices may lead to confusion if not understood clearly. Understanding muscle insertions is crucial for anyone studying sports massage, as it directly relates to muscle functionality and the implications for massage techniques and rehabilitation approaches.