What are the components of the biceps brachii?

Muscles are one of the most widely distributed tissues in the human body. Muscles provide us with strength. A person without muscles basically cannot complete basic walking, and even taking care of his own life will have problems. In our arms, the most widely distributed muscle is the biceps. So, what are the components of the biceps? Let us understand this issue together.

1. Location and composition of the biceps brachii

The biceps brachii (Musculus biceps brachii) belongs to the limb muscles among the three major muscle groups of skeletal muscles. The long head originates from the supraglenoid tuberosity of the scapula, and the short head originates from the coracoid process of the scapula. The long and short heads merge into a muscle belly in the middle of the humerus, descend to the lower end of the humerus, and the integrated tendon ends at the radial tuberosity and the fascia aponeurosis of the forearm.

2. The role of the biceps

When fixated proximally, the biceps brachii flexes and externally rotates the forearm at the elbow joint, and flexes the upper arm at the shoulder joint. When fixated distally, the biceps brachii brings the upper arm closer to the forearm. Electromyographic observations showed that the biceps brachii only had obvious electromyographic activity when the forearm was externally rotated with the palm facing forward and the elbow flexed. However, when the forearm is rotated inward, even when the palm is turned sideways to the body or the elbow is bent behind the body, there is little or no potential activity in the biceps brachii. This is also one of the main reasons why biceps exercises basically make the palms hold the equipment forward, located in the superficial layer of the anterior muscles of the upper arm. Function: Flexes the shoulder, elbow and supinates the forearm. When the biceps brachii contracts, the elbow joint flexes; when the biceps brachii relaxes, the elbow joint extends or the forearm hangs down.

Okay, after reading the introduction above, I believe you have a certain understanding of the components of the biceps. If you want to have strong biceps, you must exercise every day. Many foods are also good for muscle growth, such as beef and eggs. You can eat more of them on a daily basis.