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Scapular Region PowerPoint Presentation

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Description : Check out this medical presentation on Artery, which is titled "Scapular Region", to know about scapular region, muscles connecting the upper limb to the vertebral column.

Tags : Artery, Scapular Region, upper limb, vertebral column

Published on : Jun 02, 2021 | Views : 3328 | Downloads : 12

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SCAPULAR REGION Muscles Connecting the Upper Limb to the Vertebral Column
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Deltoid Origin Lateral third of clavicle, acromion process, spine of scapula Insertion Middle of lateral surface of shaft of humerus Nerve supply Axillary nerve C5, 6 Action Middle fibers Abducts arm; anterior fibers flex and medially rotate arm; posterior fibers extend and laterally rotate arm Abduction from 15-90 degrees
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Structures under cover of Deltoid BONE- Upper part humerus, coracoid process ,greater tubercle, lesser tubercle Intertuberculus sulcus Bursa- Subdeltoid , subaccromial bursa Muscles – attached around shoulder joint vessel- Ant and Post circumflex humeral vessel Nerves- Axillary
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Supraspinatus Origin medial 2/3 of Supraspinous fossa of scapula Insertion Greater tuberosity of humerus; capsule of shoulder joint Nerve supply Suprascapular nerve C 5, 6 Action Abducts arm and stabilizes shoulder joint Initiation of abduction 0-15 degrees
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Infraspinatus Origin Medial 2/3 Infraspinous fossa of scapula Insertion Greater tuberosity of humerus; capsule of shoulder joint Nerve supply Suprascapular nerve C 5, 6 Action Laterally rotates arm and stabilizes shoulder joint
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Teres minor Origin Upper two thirds of lateral border of scapula Insertion Greater tuberosity of humerus; capsule of shoulder joint Nerve supply Axillary nerve C5, 6 Action Laterally rotates arm and stabilizes shoulder joint
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Teres major Origin Lower third of lateral border of scapula Insertion Medial lip of bicipital groove of humerus Nerve supply Lower subscapular nerve C6, 7 Action Medially rotates and adducts arm and stabilizes shoulder joint
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Subscapularis Origin Medial 2/3 subscapular fossa Insertion Lesser tubercle of humerus Nerve supply Upper and lower subscapular nerves C5, 6, 7 Action Medially rotates arm and stabilizes shoulder joint
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Rotator Cuff
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Arterial Anastomosis Around the Shoulder Joint The extreme mobility of the shoulder joint may result in kinking of the axillary artery and a temporary occlusion of its lumen To compensate for this, an important arterial anastomosis exists between the branches of the subclavian artery and the axillary artery ensuring that an adequate blood flow takes place into the upper limb irrespective of the position of the arm
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