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Definition
Trapezius O: Occipital Protuberance, Ligamentum Nuchae, C7-T12 spinous processes I: Upper: Lateral 1/3 clavicle, acromion Middle: Spine of scapula Lower:Root of spine A: Upper: upward rotation, elevation Middle: retraction Lower: upward rotation, depression N: Cranial nerve XI (accesory), branches of C3,4 B: Transverse cervical artery |
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Definition
Latissimus Dorsi
O: Thoraclumbar apopneurosis, inferior 6 thorassic spinous processes, iliac crest and sacrum, inferior 3-4 ribs, inferior angle of scapula I: Bicipital (intertubercular) groove of humerus A: Medial rotation, adduction, extension of humerus N: Thoracodorsal nerve (C6,7,8) B: Thoracodorsal artery
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Definition
Levator Scapula
O: Tranverse processes C1-C4 I: Vertebral border of scapula between superior angle and root of spine A: Elevation, downward rotation N: Dorsal scapular nerve (C5) and branches of C3,4 B: Dorsal scapular artery
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Definition
Rhomboid Minor
O: Spinous processes C7, T1 I: Root of spine of scapula A: Retraction, downward rotation N: Dorsal scapular nerve (C5) B: Dorsal scapular artery
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Definition
Rhomboid Major
O: Spinous processes T2-T5 I: Vertebral border from root of scapular spine to inferior angle A: Retraction, downward rotation N: Dorsal scapular nerve (C5) B: Dorsal scapular artery
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Definition
Serratus Posterior Superior O: Caudal ligamentum nuchae, spinous processes of C7,T1,T2 I: Superior 2,3,4,5 ribs A: Raises ribs during inspiration N: Intercostal nerves T1,T2,T3,T4 B: Posterior intercostal arteries T1,T2,T3,T4
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Definition
Serratus Posterior Inferior O: Spinous processes of T11-L3
I: Inferior borders of inferior 4 ribs A: Draws ribs out and down counteracting diaphragm during expiration N: Intercostal nerves T9-12 B: Intercostal arteries T9-12
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Definition
Spinalis O: ligamentum nuchae, cervical and thoracic transverse processes I: cervical and thoracic spinous processes, occiptal bone A: Bilaterally- Extension, Unilaterally- lateral flexion N: Dorsal rami of spinal nerves B: Muscular branch of the aorta
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Longissimus O: Thoracolumbar apopneurosis, lumbar and thoracic transverse processes I: cervical and thoracic spinous processes, mastoid process
A: Bilaterally- Extension, Unilaterally- lateral flexion N: Dorsal rami of spinal nerves B: Muscular branch of the aorta |
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Definition
Iliocostalis O: Thoracolumbar apopneurosis, posterior ribs
I: Posterior ribs, cervical transverse processes A: Bilaterally- Extension, Unilaterally- lateral flexion N: Dorsal rami of spinal nerves B: Muscular branch of the aorta |
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