Understanding Key Muscles: Biceps, Quadriceps & Deltoid

Here are three muscles found in the body:

1. Biceps brachii: This muscle is located on the front of the upper arm. It is responsible for bending the elbow joint.

2. Quadriceps femoris: This muscle group consists of four muscles located on the front of the thigh. It is responsible for straightening the knee joint.

3. Deltoid: This muscle is located on the shoulder. It is responsible for lifting the arm away from the body and rotating it.