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Published byJon Woodby Modified over 9 years ago
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Abbie Bintliff Amanda Phillip Erin Wojno Kyle Barile
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Origin Insertion Action Nerve Supply Anterior surface of scapula Greater tubercle of humerus Abducts the arm Suprascapular nerve
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-The supraspinatus is the muscle that runs along the top of the shoulder. -The distal supraspinatus tendon connects the supraspinatus to the upper arm bone, or humerus, and forms part of the rotator cuff, a group of muscles and tendons that support the shoulder. -The other three muscles whose connections to the arm constitute the rotator cuff are the subscapularis, which controls internal rotation; the teres minor, which controls external rotation; and the infraspinatus, which assists the arm in elevating during external rotation. -Supraspinatus muscle stabilizes the head of the arm bone in the shoulder joint preventing it from slipping upwards during shoulder movements.
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Origin Insertion Action Nerve Supply Tubercle below glenoid cavity and lateral an medial surfaces of humerus Olecranon process of ulna Extends elbow Radial nerve
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-They are named as triceps group of muscles, because it is not a single muscle. -These muscles make up over two thirds of your upper arm and work with the biceps muscles. -Triceps means three heads and that each of these heads (long, lateral and medial) performs a different function - -Anything that requires you to use straight arms generally means you are using your triceps. -The most common triceps injury is a pull or rupture, this can occur during overexertion in sports or weight lifting.
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Origin Insertion Action Nerve Supply Acromion Process, spine of the scapula, the clavicle Deltoid tuberosity of humerus Abducts, extends, and flexes arm Axillary Nerve
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-The deltoid is broken up into three parts the front deltoid, the side deltoid, and the posterior -Deltoids are one of the hardest muscles to develop while working out. -Constantly being involved in upper body movement the deltoid hardly gets and rest. -The name deltoid was originally called the Deltoideus. This name came about by the shape of the Greek letter Delta which is a triangle.
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Front Raise Shoulder Press
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