پاورپوینت سیستم عضلانی

پاورپوینت سیستم عضلانی (pptx) 22 اسلاید

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نوع فایل : PowerPoint (.pptx) ( قابل ویرایش و آماده پرینت )

تعداد اسلاید: 22 اسلاید

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10 The Muscular System Part C Muscles Crossing the Shoulder Nine muscles cross the shoulder joint and insert into the humerus Prime movers include: Pectoralis major – arm flexion Latissimus dorsi and posterior fibers of the deltoid – arm extension Middle fibers of the deltoid – arm abduction Muscles Crossing the Shoulder Figure 10.14a Muscles Crossing the Shoulder Figure 10.14d Muscles Crossing the Shoulder Rotator cuff muscles – supraspinatus, infraspinatus, teres minor, and subscapularis Function mainly to reinforce the capsule of the shoulder Secondarily act as synergists and fixators The coracobrachialis and teres major: Act as synergists Do not contribute to reinforcement of the shoulder joint Muscles Crossing the Shoulder Figure 10.14a Muscles Crossing the Shoulder Figure 10.14d Muscles Crossing the Shoulder Figure 10.14c Muscles Crossing the Elbow Forearm extension The triceps brachii is the prime mover of forearm extension The anconeus is a weak synergist Forearm flexion Brachialis and biceps brachii are the chief forearm flexors The brachioradialis acts as a synergist and helps stabilize the elbow