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15 Muscles MT4

15 muscles for MT4 class @ trillium college

QuestionAnswer
Levator Scapulae O: Tvp’s of C1 and C4 I: Superior medial border of the scapula A: elevation of the scapula N: dorsal scapular nerve and C3,C4,C5 (spinal nerves)
Rhomboid Minor O: SP’s of C7 and T1 I: Superior medial border of the scapula *helps to stabilize the scapula A: retraction of the scapula N: dorsal scapular never
Rhomboid Major O: SP’s of T2-T5 vertebrae I: inferior 2/3rds of the medial border of the scapula *stabilizes the scapula A: retraction of the scapula
Deltoid O: Spine of the scapula, acromion, lateral 2/3 of clavicle I: deltoid tuberosity A: flexion, extension, abduction of humerus
Latissimus Dorsi O: SP’s of T7 to T12 thoracolumbar fascia sacrum, iliac crest posterior aspect of ribs 9-12 and inferior angle of the scapula I: bicipital groove of humerus A: adduction, medial rotation and extension of humerus (ext. primary action)
Sternocleidomastoid O: 1.sternal- manubrium of sternum 2.clavicular- medial 1/3 of clavicle I: mastoid process of temporal bone and lateral aspect of superior nuchal line of ociput A: unilaterally- lateral flexion of C-spine to same side Bi-laterally- flexion of C-spi
Supraspinatus O: supraspinous fossa of scapula I: greater tubercle of humerus A: abduction of shoulder (first 15 degrees) N: suprascapular
Infraspinatus O: infraspinous fossa of scapula I: greater tubercle of humerus A: external rotation of shoulder N: suprascapular
Teres Minor O: Superior ½ of lateral border of scapula I: greater tubercle of humerus A: external rotation of humerus N: axillary
Subscapularis O: anterior subscapular fossa of scapula I: lesser tubercle of humerus A: internal rotation of humerus N: subscapular
Pectoralis Minor O: ribs 3-5 (anterior and sternal ends) I: coracoid process of scapula A: slight abduction of the scapula, elevates ribs when scapula is stabilized N: medial pectoral nerve
Pecotoralis Major O: anterior, medial 1/3 of clavicle, manubrium, costal cartilages 2-6 I: lateral lip of bicipital groove of humerus A: flexion, medial rotation, and adduction of humerus N: lateral and medial pectoral nerves
Biceps Brachi O: long head: supraglenoid tubercle short head: coracoid process I: radial tuberosity and deep fascia of forearm via the biciptial aponeurosis A: flexion of elbow, flexion of shoulder, supination of forearm
Coracobrachialis O: coracoid process of scapula I: medial midshaft of humerus (same level as deltoid tuberosity, but on medial aspect of humerus A: flexion and slight adduction of humerus N: musculocutaneous nerve
Seratus Anterior O: lateral surfaces of ribs 1-8 I: anterior aspect of medial border of scapula A: protraction and upward rotation of scapula (prevents scapular winging) N: long thoracic nerve
Created by: casteelsm
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