Action of Upper Limb’s Muscles

at 3 Main Joints [Shoulder, Elbow & Wrist] Shoulder Elbow Wrist Flexion 1. Pectoralis Major (Clavicular Head)2. Deltoid (Anterior Fiber)3. Coracobrachialis 1. Biceps Brachii2. Brachialis3. Brachioradialis 1. Flexor Carpi Radialis2. Flexor Carpi Ulnaris3. Palmaris Longus Extension 1. Teres Major2. Deltoid (Posterior Fiber)3. Latissimus Dorsi 1. Triceps2. Anconeus 1. Extensor Carpi Radialis Longus2. Extensor...

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Glycoaminoglycan

Glycoaminoglycans (GAGs) aka [Mucopolysaccharides] GAGs Structure Bonds / Linkage Hydrolytic Products Distribution Hyaluronic acid Glucuronic acid N-acetyl glucosamine Intraunit: β 1,3 glycosidic bondInterunit: β 1,4 linkages 1. glucuronic acid2. glucosamine3. acetic acid 1. synovial joint – lubricant2. shock absorbent (vitreous body of eye)3. cement substances (ECM between skin cells) Chondroitin sulfate...

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M.U.S.C.L.E.S [ Pectoral Region & Back Muscles]

M.U.S.C.L.E.S [ Pectoral Region & Back Muscles] ORIGIN INSERTION NERVE SUPPLY ACTION Pectoralis Major 1. Sternocostal head: from the front of sternum & upper 6 costal cartilages2. Clavicular head: from the front of medial half of the clavicle 1. Lateral lip of bicipital groove of humerus 1. Medial pectoral nerve2. Lateral pectoral nerve 1. Flexion of arm2. Adduction of arm3. Medial rotation4. Respiratory...

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