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Upper Body

muscle attachments

QuestionAnswer
Serratus Anterior (Upper Fibers) O: Anterior Superior Lateral surface of Ribs 1-4 I: Anterior surface of Medial border of scapula
Serratus Anterior (Lower Fibers) O: Anterior superior lateral surface of ribs 5-9 I: Anterior superior Inferior angle of scapula
Rhomboid Major O: Spinous process T2-T5 I: Medial border of scapula running from the spine to inferior angle
Rhomboid Minor O: Inferior part of Ligament Nuchae, Spinous Processes of C7-T1 I: Root of the spine of scapula
Upper Trapezius (Scapular Fibers) O: Occiput, nuchal ligament and spinous process of C7 I: Superior surface of acromion and lateral 1/3 of spine of scapula
Upper Trapezius (Clavicular Fibers) O: Superior nuchal line of occiput and nuchal ligament I: Superior, Posterior, Lateral 1/3 of clavicle
Middle Trapezius O: Spinous Processes of T1-5 I: Middle 1/3 of superior surface of spine of scapula
Lower Trapezius O: Spinous Processes of T5-12 I: Tubercle(Root) at medial end of the scapular spine
Levator Scapula O: Transverse Process of atlas and axis, C3 & C4 (C1-4) I: Medial border of scapula from the root of the spine of scapula to superior angle
Subclavius O: Upper border of 1st rib and manubrium I: Groove on the underside of the clavicle & @junction of clavicle & acromion
Pectoralis Minor O: Superior margins of ribs 2-5 I: Anterior survace of the coracoid process
Pectoralis Major (Sternal Fibers) O: Anterior surface of sternum and cartilage of 1-6 ribs I: Crest of greater tubercle of humerus, proximal medial surface of humerus
Pectoralis Major (Clavicular Fibers) O: Medial 1/3 of anterior surface of clavicle I: Lower lateral aspect of bicipital groove
Pectoralis Major (Costal Fibers) O: Aponeurosis of external oblique and cartilage of ribs 6&7 I: Outer bicipital ridge of humerus
Latissimus Dorsi O: Spinous process of T6-12, last 3-4 ribs, posterior aspect of tip of the scapula, Thoracolumbar Fascia and posterior Iliac Crest I: Into bottom, medial aspect of intertubercular groove
Teres Major O: Posterior surface of inferior angle and lower 1/3 of lateral border of scapula I: Crest of lesser tubercle of humerus
Anterior Deltoid (Scapular Fibers) O: Most anterior lateral surface of clavicle and acromion process of scapula I: Anterior, medial surface of deltoid tuberosity of humerus
Anterior Deltoid (Clavicular Fibers) O: Anterior border and superior surfaces of lateral 1/2 of clavicle I: Anterior, medial surface of deltoid tuberosity of humerus
Middle Deltoid (Posterior Fibers) O: Acromion process of scapula I: Lateral aspect of deltoid tuberosity of humerus
Middle Deltoid (Anterior Fibers) O: Upper surface of Acromion Process I: Lateral aspect of deltoid tuberosity of humerus
Posterior Deltoid (Medial Fibers) O: Inferior margin of spine of scapula, most medial fibers I: Posterior aspect of deltoid tuberosity
Posterior Deltoid (Lateral Fibers) O: Inferior margin of spine of scapula, most lateral fibers I: Posterior aspect of deltoid tuberosity
Supraspinatus O: Posterior fibers arising from the spine of the scapula and the medial 2/3 of supraspinatus fossa I: Greater tubercle of humerus and the capsule of the shoulder joint
Teres Minor O: Superior 2/3 of posterior surface of the lateral border of the scapula I: Inferior aspect of the greater tubercle of the humerus and the joint capsule of the shoulder
Infraspinatus (Superior Fibers) O: Superior 1/4 of Infraspinous fossa of scapula I: Greater tubercle of humerus
Infraspinatus (Superior-Middle Fibers) O: Superior-middle 1/4 of infraspinous fossa of scapula I: Greater tubercle of humerus
Infraspinatus (Inferior-Middle Fibers) O: Inferior-middle 1/4 of infraspinous fossa of scapula I: Greater tubercle of the humerus
Infraspinatus (Inferior Fibers) O: Inferior 1/4 of infraspinous fossa of scapula I: Greater tubercle of the humerus
Subscapularis (Superior Fibers) O: Superior 1/4 of subscapular fossa I: Lesser tubercle of humerus
Subscapularis (Superior-Middle Fibers) O: Superior-middle 1/4 of Subscapularis fossa I: Lesser tubercle of humerus
Subscapularis (Inferior-Middle Fibers) O: Inferior-middle 1/4 of subscapularis fossa I: Lesser tubercle of humerus
Subscapularis (Inferior fibers) O: Inferior 1/4 of subscapularis fossa I: Lesser tubercle of humerus
Biceps Brachii (Long Head) O: Supra-glenoid tubercle of scapula I: Tuberosity of radius and lacertus fibrosis
Biceps Brachii (Short Head) O: Tip of coracoid process of scapula I: Tuberosity of proximal, medial radius
Coracobrachialis O: Tip of coracoid process of scapula I: Middle of medial surface and border of body/shaft of humerus (just opposite from deltoid tuberosity)
Brachialis O: Distal anterior surface of humerus (lower half) I: Tuberosity and coronoid process of ulna
Brachioradialis O: Distal lateral surface of humerus I: Forms flat tendon that attaches to the lateral side of the lower end of radius (styloid process)
Triceps (Long Head) O: Infra-glenoid tubercle of scapula I: Tendon of insertion which is attached to the superior posterior surface of the olecranon and deep fascia of the forearm
Triceps (Medial Head) O: Posterior surface of distal half of the body of the humerus I: Tendon of insertion which is attached to the superior posterior surface of the olecranon and deep fascia of the forearm
Triceps (Lateral Head) O: Posterior lateral surface of proximal 1/2 of humerus I: Tendon of insertion which is attached to the superior posterior surface of the olecranon and deep fascia of the forearm
Anconeus O: Lateral epicondyle of humerus I: Superior 1/4 of dorsal surface of ulna
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