Muscles

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Author:
58centurion
ID:
253760
Filename:
Muscles
Updated:
2013-12-18 17:39:57
Tags:
anatomy origin insertion innervation
Folders:
PT,School
Description:
Muscle insertions, origins, and innervations
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  1. Deltoid
    Origin: (anterior) Lateral third of clavicle; (middle) acromion; (posterior) scapular spine

    Insertion: Deltoid tuberosity on the lateral side of the humerus

    Innervation: Axillary nerve
  2. Triceps
    Origin: (lateral) Posterior surface of the body of the humerus; (long) infraglenoid tuberosity; (medial) posterior surface of the body of the humerus below the groove for the radial nerve

    Insertion: Olecranon of the ulna

    Innervation: Radial nerve
  3. Biceps
    Origin: (long) Supraglenoid tubercle of the scapula; (short) coracoid process of the scapula

    Insertion: Radial tuberosity and bicipital aponeurosis

    Innervation: Musculocutaneous nerve
  4. Brachialis
    Origin: Anterior distal half of humerus

    Insertion: Ulnar tuberosity and anterior surface of the coronoid process

    Innervation: Musculocutaneous nerve and a branch of the radial nerve
  5. Brachioradialis
    Origin: Ridge superior to lateral epicondyle of the humerus and the lateral intermuscular septum

    Insertion: Lateral side of the base of the styloid process of the radius

    Innervation: Radial nerve
  6. Extensor carpi radialis longus
    Origin: Lower third of the lateral supracondylar ridge of the humerus

    Insertion: Dorsal surface of the base of the second metacarpal bone

    Innervation: Radial nerve
  7. Extensor carpi radialis brevis
    Origin: Lateral epicondyle of the humerus by the common tendon

    Insertion: Dorsal base of the third metacarpal bone

    Innervation: Radial nerve
  8. Extensor digitorum
    Origin: Lateral epicondyle of the humerus by the common tendon

    Insertion: Dorsal digital expansions of digits 2-4

    Innervation: Deep radial nerve
  9. Extensor digiti minimi
    Origin: Lateral epicondyle of the humerus by the common tendon

    Insertion: Dorsal digital expansion on the 1st phalanx of the little finger

    Innervation: Deep radial nerve
  10. Extensor carpi ulnaris
    Origin: Lateral epicondyle of the humerus by the common tendon and dorsal surface of the ulna

    Insertion: Tubercle on the ulnar side of the base of the fifth metacarpal

    Innervation: Deep branch of the radial nerve
  11. Anconeus
    Origin: Back part of the lateral epicondyle of the humerus

    Insertion: Side of the olecranon and proximal dorsal surface of the body of the ulna

    Innervation: Radial nerve
  12. Supinator
    Origin: Lateral epicondyle of humerus, ulna, radial collateral ligaments, and annular ligaments

    Insertion: Dorsal and lateral surfaces of the body of the radius

    Innervation: Deep radial nerve
  13. Abductor pollicis longus
    Origin: Lateral dorsal surfaces of the radius and ulna as well as the interosseous membrane

    Insertion: Radial (lateral) side of the base of the first metacarpal bone

    Innervation: Deep radial nerve
  14. Extensor pollicis brevis
    Origin: Dorsal surface of the body of the radius and interosseous membrane distal to the origin of the adductor pollicis longus

    Insertion: Base of the first phalanx of the thumb

    Innervation: Deep radial nerve
  15. Extensor pollicis longus
    Origin: Lateral part of the middle third of the dorsal (posterior) surface of the body of the ulna and from the interosseous membrane

    Insertion: Base of the last phalanx of the thumb

    Innervation: Deep radial nerve
  16. Extensor indicis
    Origin: Posterior surface of the ulna and interosseous membrane

    Insertion: Posterior digital expansion of the second digit

    Innervation: Deep radial nerve
  17. Pronator teres
    Origin: Medial epicondyle of humerus, coronoid process of ulna

    Insertion: lateral surface of radius

    Innervation: Median nerve
  18. Flexor carpi radialis
    Origin: Medial epicondyle of the humerus

    Insertion: Base of the 2nd metacarpal and base of the 3rd metacarpal

    Innervation: Median nerve
  19. Palmaris longus
    Origin: Medial epicondyle of humerus

    Insertion: Palmar aponeurosis and flexor retinaculum

    Innervation: Median nerve
  20. Flexor digitorum superficialis
    Origin: (Humeral head) medial epicondyle; (ulnar head) coronoid process; (radial head) below the radial tuberosity

    Insertion: Middle phalanx of digits 2-5

    Innervation: Median nerve
  21. Flexor digitorum profundus
    Origin: Proximal three-fourths of the anterior and medial surfaces of the ulna and interosseous membrane

    Insertion: Base of the palmar surface of the distal phalanges 2-5

    Innervation: Interosseous branch of median and ulnar nerves
  22. Flexor carpi ulnaris
    Origin: Medial epicondyle of the humerus and the olecranon of the ulna

    Insertion: Pisiform bone, hook of the hamate, base of metacarpal 5

    Innervation: Ulnar nerve
  23. Flexor pollicis longus
    Origin: Anterior surface of radius and interosseous membrane

    Insertion: Base of distal phalanx of thumb

    Innervation: Interosseous branch of the median nerve
  24. Pronator quadratus
    Origin: Distal fourth of anterior surface of the ulna

    Insertion: Distal fourth of the anterior surface of the radius

    Innervation: Interosseous branch of the medial nerve
  25. Abductor pollicis brevis
    Origin: Flexor retinaculum, scaphoid, and trapezium

    Insertion: Radial base of proximal phalanx of digit 1

    Innervation: Median, recurrent nerve
  26. Opponens pollicis
    Origin: Flexor retinaculum, scaphoid, and trapezium

    Insertion: Lateral border of metacarpal bone of digit 1

    Innervation:
  27. Flexor pollicis brevis
    Origin: (Superficial head) flexor retinaculum and trapezium; (deep head) trapezoid and capitate bones

    Insertion: Radial side of the base of the proximal phalanx for digit 1

    Innervation: (Superficial) median nerve; (deep) deep branch of ulnar nerve
  28. Palmaris brevis
    Origin: Flexor retinaculum; medial border of the palmar aponeurosis

    Insertion: Skin on the ulnar border of the palm

    Innervation: Superficial branch of the ulnar nerve
  29. Flexor digiti minimi
    Origin: Hook of the hamate, flexor retinaculum

    Insertion: Base of the proximal phalanx of digit 5

    Innervation: Deep branch of the ulnar nerve
  30. Abductor digiti minimi
    Origin: Pisiform bone

    Insertion: Medial side of the proximal phalanx of digit 5

    Innervation: Ulnar nerve
  31. Opponens digiti minimi
    Origin: Flexor retinaculum; hook of hamate

    Insertion: Ulnar border of the 5th metacarpal

    Innervation: Ulnar nerve
  32. Adductor pollicis
    Origin: 2nd and 3rd metacarpal and capitate

    Insertion: Medial surface of base of proximal phalanx of digit 1

    Innervation: Ulnar nerve
  33. Lumbricals
    Origin: Tendons of the flexor digitorum profundus

    Insertion: Extensor expansion of the same digit

    Innervation: (1,2) median nerve; (3,4) ulnar nerve
  34. Palmar interosseous
    Origin: One head from the metacarpals of digits 2,4,5

    Insertion: Dorsal digital expansions of digits 2,4,5

    Innervation: Ulnar nerve
  35. Dorsal interosseous
    Origin: Trapezium

    Insertion: Base of proximal phalanges and dorsal expansions of digits 2-4

    Innervation: Ulnar nerve
  36. Coracobrachialis
    Origin: Coracoid process of scapula

    Insertion: Medial surface and border of the body of the humerus

    Innervation: Musculocutaneus nerve
  37. Pectoralis major
    Origin: Anterior surface of sternal portion of the clavicle, the anterior surface of the sternum; the cartilages of the true ribs; and the aponeurosis of the external oblique

    Insertion: Crest of the greater tubercle of the humerus

    Innervation: Medial pectoralis and lateral pectoralis nerves
  38. Pectoralis minor
    Origin: Ribs 3-5

    Insertion: Coracoid process of scapula

    Innervation: Medial pectoral nerve
  39. External oblique
    Origin: Sternum, external surfaces and inferior borders of the lower eight ribs (5-12)

    Insertion: Pubis, linea alba via an aponeurosis and the iliac crest

    Innervation: Lower intercostal, iliohypogastric and ilioinguinal nerves
  40. Rectus abdominis
    Origin: Crest of the pubis and pubic tubercle; front of pubic symphysis

    Insertion: Pubis, cartilages of the 5th, 6th, 7th ribs, xiphoid process

    Innervation: Spinal nerves T7-T12
  41. Internal oblique
    Origin: Lateral halg of the inguinal ligament, middle lip of the iliac crest, and the thoracolumbar fascia

    Insertion: Pubis, inferior border of the lower three or four ribs (9, 10-12), the linea alba; the aponeurosis fuses with the external oblique to form the rectus sheath

    Innervation: Lower five thoracic nerves, first lumbar nerve and the iliohypogastric and ilioinguinal nerves
  42. Transverse abdominis
    Origin: Lateral third of the inguinal ligament, the inner lip of the iliac crest, the inner surface of the cartilages of the lower six ribs, thoracolumbar fascia, and interdigitating with the diaphragm

    Insertion: Ends in an aponeurosis. The upper three-fourths form the back of the rectus sheath and insert on the linea alba; the lower forth forms the front of the rectus sheath and attaches to the pubis.

    Innervation: Lower six thoracic nerves, first lumbar nerve, and the iliohypogastric and ilioinguinal nerves
  43. Trapezius
    Origin: Occipital bone; ligamentum nuchae; spinous processes of T1-T12

    Insertion: Lateral third of clavicle, acromion and scapular spine of scapula

    Innervation: Accessory nerve and cervical plexus
  44. Levator scapulae
    Origin: Transverse processes of C1-C4

    Insertion: Superior part of the medial border of the scapula

    Innervation: Dorsal scapular nerve and direct branches from the spinal nerves C3, C4
  45. Rhomboideus minor
    Origin: Spinous processes of C7-T1

    Insertion: Medial border of the scapula above scapular spine

    Innervation: Dorsal scapular nerve
  46. Rhomboideus major
    Origin: Spinous processes of T2-T5

    Insertion: Medial border of the scapula below scapular spine

    Innervation: Dorsal scapular nerve
  47. Serratus posterior superior
    Origin: The supraspinal ligament, the ligamentum nuchae and the spinous processes of the upper two or three thoracic vertebrae (T1-T3); the seventh cervical vertebrae (C7)

    Insertion: Upper borders of ribs 2-5

    Innervation: Intercostal nerves 2-5
  48. Latissimus dorsi
    Origin: Spinous processes of T7-T12, L1-L5, and the sacrum; thoracolumbar fascia; inferior portion of the scapula; posterior third of the iliac crest; ribs 9-12

    Insertion: Intertubercular groove of humerus

    Innervation: Thoracodorsal (middle and long scapular nerve) nerce, a branch of the posterior cord
  49. Serratus posterior inferior
    Origin: The supraspinal ligament; and the spinous processes of the upper two or three lumbar vertebrae (L1-L3) and the lower two thoracic vertebrae (T11, T12)

    Insertion: Lower borders of ribs 9-12

    Innervation: Intercostal nerves 9-12
  50. Quadratus lumborum
    Origin: Aponeurosis fibers from the iliolumbar ligament and the adjacent portion of the iliac crest

    Insertion: Lower border of the last rib for about half its length and the transverse processes of L1-L4

    Innervation: Spinal nerves T12 and L1-L2

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