What is the Large Diamond-Shaped Muscle of the Upper Back

Question

What is the large diamond-shaped muscle of the upper back?
A) levator scapulae
B) pectoralis minor
C) subclavius
D) trapezius

Accepted Answer

The trapezius muscle is a large diamond-shaped muscle of the upper back that extends from the base of the skull to the middle of the back and from one shoulder blade to the other. The other options (levator scapulae, pectoralis minor, and subclavius) are all smaller muscles located in different areas of the body.