The major muscles in the upper torso of the body include: Trapezius: This muscle extends across the neck, shoulder, and back. Rhomboid major: Attached to the shoulder blade, this muscle is one of many that aids shoulder movement. Infraspinatus: This rotator cuff muscle helps raise and lower the arm.
The muscles of the chest and upper back occupy the thoracic region of the body inferior to the neck and superior to the abdominal region and include the muscles of the shoulders. These important muscles control many motions that involve moving the arms and head — such as throwing a ball, looking up at the sky, and raising your hand.
Muscle Anatomy: Human Anatomy Chart 1 Abs & Obliques Anatomy 2 Back Anatomy 3 Biceps Anatomy 4 Calves Anatomy 5 Chest Anatomy 6 Forearms Anatomy 7 Leg, Hip & Gluteal Anatomy 8 Neck Anatomy More …This diagram with labels depicts and explains the details of Upper Body Muscle Anatomy.