What is the largest muscle in the human body?

The gluteus maximus is the largest muscle in the human body, playing a crucial role in various physical activities. It is located in the buttock region and is responsible for the movement of the hip and thigh. Its primary functions include extending and externally rotating the hip joint, which is essential for actions such as walking, running, and climbing. Because of its size and strength, the gluteus maximus provides stability during movements and assists in maintaining proper posture.

In contrast, while the rectus femoris, pectoralis major, and latissimus dorsi are all significant muscle groups within the body, they do not match the size and mass of the gluteus maximus. The rectus femoris is one of the quadriceps muscles primarily involved in knee extension and hip flexion. The pectoralis major is a key muscle in the upper body that aids in movements of the shoulder joint. The latissimus dorsi plays a critical role in the movements of the back and arms. However, none of these muscles can rival the sheer size and function of the gluteus maximus, making it the largest muscle in the human body.