Which muscle group is NOT considered a major muscle group of the body?

The forearm is not considered a major muscle group of the body compared to the others listed. Major muscle groups typically refer to larger, more influential muscles that play significant roles in movement and stability.

The deltoid is a key muscle group involved in shoulder abduction and is critical for upper body movements. The trapezius, located in the upper back and neck, plays an essential role in moving and stabilizing the shoulder blades, contributing to various arm movements. The quadriceps, a large muscle group on the front of the thigh, is fundamental for activities such as walking, running, and jumping, providing strength and power for the lower body.

In contrast, the forearm muscles, while important for grip strength and fine motor control, do not constitute a major muscle group in the same way as the deltoid, trapezius, or quadriceps. The focus on major muscle groups tends to center around those that have significant overall functional importance in movement and athletic performance.