Deltoid Abducts the shoulder Posterior deltoid extends the shoulder Anterior deltoid flexes the...
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Transcript of Deltoid Abducts the shoulder Posterior deltoid extends the shoulder Anterior deltoid flexes the...
![Page 1: Deltoid Abducts the shoulder Posterior deltoid extends the shoulder Anterior deltoid flexes the shoulder.](https://reader035.fdocuments.in/reader035/viewer/2022062217/5697bfa81a28abf838c991bc/html5/thumbnails/1.jpg)
Deltoid
Abducts the shoulderPosterior deltoid extends the shoulder
Anterior deltoid flexes the shoulder
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Biceps Brachii
• Flexes the elbow • Supination of the forearm and shoulder
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Brachioradialis
• Flexes the elbow
![Page 4: Deltoid Abducts the shoulder Posterior deltoid extends the shoulder Anterior deltoid flexes the shoulder.](https://reader035.fdocuments.in/reader035/viewer/2022062217/5697bfa81a28abf838c991bc/html5/thumbnails/4.jpg)
Origin: infraspinatus fossa of scapula
Insertion: Greater tubercle of the humerus
Action: Lateral rotation of the shoulder (humerus), horizontal adduction of the humerus (shoulder)
Infraspinatus Muscle
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Supraspinatus
Origin: Supraspinatus fossa of the scapula
Insertion: The greater tubercle of the humerus
Action: Abduction of the shoulder (humerus) and stabilizes the shoulder joint
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Flexor Carpi Ulnaris
Origin: medial epicondyle of humerus and olecranon process of ulna
Insertion: Base of the fifth metacarpal
Action: Flexes wrist; acts with Extensor carpi ulnaris to adduct wrist
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Teres minor: lateral (external) rotation of humerus
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Extensor carpi ulnaris: extends and adducts the wristFlexor carpi ulnaris: flexes wrist and abducts the wrist
Extersor carpi ulnaris Flexor carpi
ulnaris
Extersor carpi ulnaris
Flexor carpi ulnaris
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Triceps brachii: extends elbow and shoulder
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Trapezius
Elevates, depresses, and retracts the scapula. When they both act together, draws head dorsally (backwards).
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Latissimus Dorsi
Adducts and extends the shoulder (humerus)Rotates the shoulder (humerus)Draws the shoulder down and backward.
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Extensor Carpi Radialis
Extends and abducts the wrist.Acts with the flexor carpi radialis to abduct the wrist.
![Page 13: Deltoid Abducts the shoulder Posterior deltoid extends the shoulder Anterior deltoid flexes the shoulder.](https://reader035.fdocuments.in/reader035/viewer/2022062217/5697bfa81a28abf838c991bc/html5/thumbnails/13.jpg)
Subscapularis: Medial internal and lateral external rotation of the humorous bone; stabilizes shoulder
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Brachialis: flexes elbow
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Flexor Carpi Radialis: flexes and abducts wrist