Bicep Muscles Anatomy

Overview of the anatomy

This article briefly explores anatomy. The or biceps brachii is a two-headed .

Location of the biceps muscle

The biceps lies on the front of the upper arm between the shoulder and the elbow.

biceps muscle anatomy
biceps muscle anatomy

The heads of the biceps muscle

Both heads of the biceps arise on the scapula. They join to form a single muscle belly which is attached to the upper forearm.

biceps muscle anatomy
Heads of the biceps muscle

Functions of the biceps muscle

The biceps crosses both the shoulder and elbow joints. Its main function is at the elbow where it flexes the forearm and supinates the forearm.

Both these movements are used when opening a bottle with a corkscrew:

First the biceps unscrews the cork (supination/palm upwards)

Then it pulls the cork out (flexion/bends upward at the elbow) (Wikipedia, 2022).

Simple definitions of supination and flexion


To supinate is to turn the palms upward (Merriam-Webster, 2022).

Supintaion is the rotation of the forearm and hand so that the palm faces forward or upward (Merriam-Webster, 2022).


Flexion is a bending movement around a joint in a limb (such as the knee or elbow). This bending decreases the angle between the bones of the limb at the joint (Merriam – Webster, 2022).

biceps muscle anatomy
Flexion at the biceps and triceps

Leave a Reply

Your email address will not be published.