The muscles of the shoulders -
The deltoid is a large,three headed,triangular muscle.
BASIC FUNCTION: To rotate and lift the arm.The anterior deltoid lifts the arm to the front;the medial deltoid lifts the arm to the side;the rear or posterior deltoid lifts the arm to the rear.
The TRAPEZIUS,is a flat,triangular muscle that extends out and down from the neck and then down between the shoulder.
BASIC FUNCTION - To lift the entire shoulder gridle,draw the scapula up,down,and to either side,and help turn the head.
The deltoid is a large,three headed,triangular muscle.
BASIC FUNCTION: To rotate and lift the arm.The anterior deltoid lifts the arm to the front;the medial deltoid lifts the arm to the side;the rear or posterior deltoid lifts the arm to the rear.
The TRAPEZIUS,is a flat,triangular muscle that extends out and down from the neck and then down between the shoulder.
BASIC FUNCTION - To lift the entire shoulder gridle,draw the scapula up,down,and to either side,and help turn the head.
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