Overview of Side Delts The deltoid is a large, three thick headed triangular muscle which originates from the clavicle and the scapula at the rear of the shoulder and extends down to its insertion in the upper arm. Its function is to rotate and lift the arm. The anterior deltoid lifts the arm to the […]

Overview of Rear Delt The deltoid is a large, three thick headed triangular muscle which originates from the clavicle and the scapula at the rear of the shoulder and extends down to its insertion in the upper arm. Its function is to rotate and lift the arm. The anterior deltoid lifts the arm to the […]

Overview of Deltoids The deltoid is a large, three thick headed triangular muscle which originates from the clavicle and the scapula at the rear of the shoulder and extends down to its insertion in the upper arm. Its function is to rotate and lift the arm. The front delt lifts the arm to the front, […]

Overview of Trapezius The trapezius is named for its trapezoidal shape. It is flat and broad, covering the upper back and part of the neck and shoulders, but it’s actually part of the thorax. The muscle itself comprises of three sections: Descending part which keeps running from the occipital bone and nuchal tendon to the […]