Biceps

The biceps (or biceps brachii) is a large muscle located on the front part of the upper arm between the shoulder and the elbow. It is one of the most well-known muscles in the human body due to its prominent role in arm movements and its visibility when flexed.

Structure of the Biceps

The biceps muscle has two heads:

1. Long head: Originates from the supraglenoid tubercle of the scapula (shoulder blade).
2. Short head: Originates from the coracoid process of the scapula.

Both heads merge into a single muscle belly, which then attaches to the radius bone in the forearm via a tendon.

Functions of the Biceps

The biceps brachii performs several important functions, including:

• Elbow Flexion: Bending the elbow, such as when lifting objects or performing a bicep curl.
• Forearm Supination: Rotating the forearm so that the palm faces upwards.
• Shoulder Flexion: Assisting in raising the arm forward at the shoulder joint.

Common Exercises for Biceps

To strengthen and develop the biceps, people often perform exercises like:

• Bicep Curls (with dumbbells, barbells, or resistance bands)
• Chin-ups
• Hammer Curls
• Concentration Curls

Related Muscles

The biceps works closely with other muscles in the arm, such as:

• Brachialis: Located underneath the biceps, it assists in elbow flexion.
• Brachioradialis: A forearm muscle that also helps with elbow flexion.
• Triceps: Located on the back of the upper arm, responsible for extending (straightening) the elbow.

In summary, the biceps is a key muscle involved in arm movement and plays an important role in many daily activities and exercises.