Question

identify the muscle indicated by the “x” above.
○ latissimus dorsi
○ trapezius
○ pectoralis major
○ rectus abdominis

Explanation:

The marked muscle is a large, broad back muscle that extends from the lower spine up to the upper arm, matching the location and shape of the latissimus dorsi. The trapezius is the upper back/neck muscle, pectoralis major is a chest muscle, and rectus abdominis is an abdominal muscle, none of which match the marked position.

Answer:

Latissimus dorsi