The brachialis is a muscle located in the anterior compartment of the upper arm. It is positioned deep to the biceps brachii and serves as the floor of the cubital fossa. It consists of both origin and insertion attachment points, which give the muscle its main function - flexion at the elbow.
The brachialis originates from the medial and lateral surfaces of the humerus shaft. Its insertion point is located onto the ulnar tuberosity, immediately distal to the elbow joint.
The main function of the brachialis is to help in flexion of the elbow joint. This kind of contraction takes place at the elbow joint when our arms are bent. During this activity, the brachialis works in collaboration with the biceps brachii to initiate and complete the action required.
The brachialis is innervated by the musculocutaneous nerve, with contributions from the radial nerve. This means that the brachialis receives a neural input from the musculocutaneous nerve but also receives supplementary neural input from the radial nerve.
The brachialis is supplied by two main arteries. The brachial artery and the radial artery give off blood to the brachialis muscle, enabling it to function properly.
The brachialis is most commonly used in exercises that involve flexion of the elbow joint. These exercises tend to focus mainly on the development of the brachialis, with movements such as reverse curls, hammer curls and close grip pushups being the most popular. In addition to this, the brachialis plays a major role in other exercises such as bicep curls and chin-ups by providing stability to the elbow joint.
When performing any type of exercise that involves the elbow joint, the brachialis is engaged throughout the entire range of motion. This is why it is important to ensure that this muscle is being properly activated and worked in order to maximize the effectiveness of the exercise.
The brachialis is an important muscle that is located in the anterior compartment of the upper arm. It has attachments in the medial and lateral surfaces of the humerus shaft and inserts onto the ulnar tuberosity. It is innervated by the musculocutaneous nerve and receives supplementary neural input from the radial nerve. The blood supply to the brachialis is provided by the brachial artery and the radial artery.
The brachialis plays a significant role in exercises that involve the flexion of the elbow joint. It is responsible for providing stability to the elbow joint during any type of exercises that involve the biceps and other arm muscles. To maximize the effectiveness of any exercise involving the elbow joint, it is important to ensure that the brachialis is being properly activated by contracting it throughout the entire range of motion.
