Deltoid
The trapezius muscle is a superficial muscle of the neck and upper back that acts at the shoulder. It is responsible for movements like shoulder shrugging, scapular elevation, depression, retraction, and rotation.
The heart is deep to the pectoralis major. That muscle is superficial to the heart.
The acromiotrapezius, spinotrapezius, latissimus dorsi, and spinodeltoid are four major superficial muscles of the shoulder and dorsal thoracic areas.
major pectoralis
pectoralis major
superficial transverse perineal muscle
A deep muscle is deeper in the body and a superficial muscle is closer to the surface.
There are actually four muscles which make up the shoulder adductors. These muscles include the Pectoralis Major, Coracobrachialis, Latissimus Dorsi, and Teres Major.
Pectoralis major
The trapezius muscle is part of the muscular system in the human body. It is a large superficial muscle located on the back and neck, and it is responsible for moving and stabilizing the shoulder blades.
shoulder: deltoid. Chest: Pectoralis major
aba, chest, shoulder legs, and back. no jaw muscle involved