Muscles of the Trunk and neck

This muscle (K) flexes your neck. It can also rotate the head toward the shoulder and tilt the head to the side.

This triangle-shaped muscle (A) forms the rounded shape of your shoulders, abducts the arm, and is a favorite injection site.

This large fan-shaped muscle (B) covers the upper part of the chest. It adducts and flexes the arm.

The deepest muscles (B) of the abdomen run horizontally across the abdomen.

These muscles (C) run diagonally and are the deeper of two similar muscles.

These muscles (D) are the most superficial of the diagonal muscles.

These diamond-shaped muscles (A) of the upper back extend the head, elevate, adduct, and stabilize the scapula.

The two large, flat muscles (D) that cover the lower back, extend and adduct the humerus.

What is the name of this muscle that elevates the scapula?