・Muscles that move on the pectoral girdle (1)
・Muscles that move on the pectoral girdle (2) ・Muscles that move the humerus (Axial muscles) ・Muscles that move the humerus (Scapular muscles) ・Muscles that move the radius and ulna (Forearm flexors) ・Muscles that move the radius and ulna (Forearm extensors) ・Muscles that move the radius and ulna (Forearm pronators) ・Muscles that move the radius and ulna (Forearm spinators)
Forearm spinators
  Spinator O・・・Lateral epicondyle of humerus and ridge near radial notch of ulna (supinator crest) I・・・Lteral surface of proximal 1/3 of radius A・・・Supinates forearm N・・・Deep radial nerve
Forearm pronators
   Pronator teres O・・・Medial epicondyle of humerus, coronoid process of ulna I・・・Midlateral surface of radius A・・・Pronates forearm, weakly flexes forearm N・・・Median nerve  Pronator quadratus O・・・Anterior distal end of ulna I・・・Anterior distal end of radius A・・・Pronates forearm N・・・Median nerve
Forearm extensors
  Triceps brachii O・・・Infraglenoid tubercle (Long head), Posterolateral surface of humerus (Lateral head), Posterior surface of humerus (Medial head) I・・・Olecranon process of ulna A・・・Extends forearm, extends and adducts arm N・・・Radial nerve  Anconeus O・・・Lateral epicondyle of humerus I・・・Lateral surface of oreclanon process, superior portion of posterior surface of ulna A・・・Extends forearm N・・・Radial nerve
Forearm flexors
  Biceps brachii O・・・Supraglenoid tubercle (Long head), Coracoid process of scapula (Short head) I・・・Radial tuberosity and bicipital aponeurosis A・・・Flexes forearm at elbow joint, supinates forearm at radioulnar joints, and flexes arm at shoulder joint N・・・Musculocutaneous nerve  Brachialis O・・・Anterior-distal 1/3 of humerus I・・・Ulnar tuberosity and coronoid process of ulna A・・・Flexes forearm N・・・Musculocutaneous and radial nerve  Brachioradialis O・・・Lateral distal 1/3 of humerus I・・・Styloid process of radius A・・・Flexes forearm at elbow joint, spinatoes and pronates forearm at radioulnar joint to neutral position N・・・Radial nerve
Scapular muscles
  Deltoid O・・・Acromial extremity of clavicle (Anterior fibers), acromion of scapula (Lateral fibers), spine of scapula (posterior fibers) I・・・Deltoid tuberosity of humerus A・・・Flex and internal rotate arm (Anterior fibers), Abduct arm (Lateral fibers), Extend and external rotatearm (Posterior fibers) N・・・Axillary nerve  Subscapularis O・・・Subscapular fossa of scapula I・・・Lesser tubercle of humerus A・・・Internal rotates arm N・・・Upper and lower subscapular nerve  Supraspinatus O・・・Supraspinous fossa of scapula I・・・Greater tubercle of humerus A・・・Assists deltoid muscle in abducting arm N・・・Suprascapular nerve Infraspinatus O・・・Infraspinous fossa of scapula I・・・Greater tubercle of humerus A・・・External rotates and adducts arm N・・・Suprascapular nerve Teres minor O・・・Inferior lateral border of scapula I・・・Greater tubercle of humerus A・・・External rotates, extends, adducts arm N・・・Axillary nerve  Teres major O・・・Inferior angle of scapula I・・・Medial lip of intertubercular sulcus of humerus A・・・Extends arm, assists in adduction, internal rotation of arm N・・・Lower subscapular nerve  Coracobrachialis O・・・Coracoid process of scapula I・・・ Middle of medial surface of shaft of humerus A・・・Flexes and adducts arm N・・・Musculocutaneous nerve Note: Rotator Cuff= SITS Subscapularis, Infraspinatus, Teres minor, Supraspinatus
Axial muscles
    Pectoralis major O・・・Clavicle, sternum, and costal cartilages of 2nd~6th ribs (sometimes 1st~7th) I・・・Greater tubecle and lateral lip of the intertubercular sulcus of humerus A・・・Adducts and internal rotates arm, horizontal flexion N・・・Medial and lateral pectoral nerve  Latissimus dorsi O・・・T6~L5, crest of sacrum and ilium, and 9~12th ribs I・・・Intertubercular sulcus of humerus A・・・Extends, adducts, and internal rotates arm N・・・Thoracodorsal nerve
Posterior thoracic muscles
  Trapezius O・・・Superior nuchal line of occipital bon, ligamentum nuchae, and C7 and T1~12 I・・・Clavicle and acromion and spine of scapula A・・・ Sperior fibers・・・Elevate scapula and can help extend head, rotate scapula upward Middle fibers・・・Adduct scapula Inferior fibers・・・Depress scapula, rotate scapula upward N・・・Accessory (XI) nerve and C3~C5  Levator scapulae O・・・Transverse process of C1-C4 I・・・Superior medial border of scapula A・・・Elevate scapula and rotate it downward N・・・Dorsal scapular nerve and C3~C5 Rhomboid major O・・・Spinous process of T2-T5 I・・・Inferior medial border of scapula A・・・Elevate and adduct scapula and rotate it downward N・・・Dorsal scapular nerve Rhomboid minor O・・・C7 and T1 I・・・Superior medial border of scapula A・・・Elevate and adduct scapula and rotate it downward N・・・Dorsal scapular nerve
Anterior thoracic muscles
 ・Subclavius O・・・1st rib I・・・Clavicle A・・・Depresses and moves clavicle anteriorly and helps stabilize pectoral girdle N・・・Subclavian nerve ・Pectralis minor O・・・2nd through 5th, 3rd through 5th, or 2nd through 4th ribs I・・・Coracoid process of scapula A・・・Abducts scapula and rotates it downward N・・・Medial pectoral nerve  ・Serratus anterior O・・・Superior 8 or 9 ribs (1~9 rib) I・・・Vertebral (medial) border and inferior angle of scapula A・・・Abducts scapula and rotates it upward N・・・Long thoracic nerve < 前のページ次のページ >
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