Muscles Test 5 Anatomy

1. Muscles Test 5 Anatomy Muscle Origin Insertion Action Innervation

2. Upper Trunk and Shoulder Muscles

3. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Trapezius • skull, cervical and throacic vertebrae • spinous process of Scapula and Clavicle • elevate and retract and depress shoulder • N. XI – Accessory Nerve

4. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Latissimus Dorsi • illiac Crest and Lumbar spines by Aponeurosis • on Humerus at the Intertubucular Groove. • Very narrow insertion • adduction and medial rotation of shoulder. Some extension. Handcuff muscle • Thoracodorsal Nerve

5. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Rhomboid Major • spinous processes • vertebral border of Scapula • retraction of Scapula • Dorsal Scapula

6. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Rhomboid Minor • spinous processes • vertebral border of Scapula • retraction of Scapula • Dorsal Scapular

7. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Levator Scapulae • skull and upper cervical vertebrae • upper angle of Scaupla • elevate Scapula and depresses Glenoid • Dorsal Scapular

8. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Supraspinatus • supraspinous fossa • greater tubercle • abduction of arm • suprascapular nerve

9. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Infraspinatus • infraspinous fossa • greater tubercle • lateral rotation of shoulder joint • Suprascapular nerve

10. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Teres Minor • lateral border of Scapula • inferior to infraspinatus on greater tubercle • lateral rotation of shoulder • Axillary Nerve

11. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Subscapularis • subscapular fossa • intertubercular groove • medial rotation of shoulder • Upper and Lower Subscapular Nerve

12. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Deltoid • spine of clavicle • deltoid tuberosity • abduction. Anterior fibers do some flexion. Posterior fibers do extension. • Axillary Nerve

13. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Teres Major • lateral border of Scapula • Intertubercular Groove – anterior to Humerus • adduct arm and medial rotation • Lower Subscapular Nerve

14. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Pectoralis Major • Clavicle, sternum • Bicipital groove of humerus • Adducts arm, flexes arm • Medial and lateral pectoral nerves

15. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Pectoralis Minor • Ribs 3-5 • Coracoid process of scapula • Depresses shoulder, elevates ribs when scapula is fixed • Medial pectoral nerve

16. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Serratus Anterior • Ribs 1-8 • Medial border of scapula • Pulls scapula around thoracic wall, rotates scapula • Long thoracic nerve

17. Arm (Upper) Muscles

18. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Biceps Brachii • Short Head -Corocoid Process, Long Head- Supraglenoid Tubercle • Radius • flexion of elbow and shoulder; supination • Musculocutaneous N

19. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Brachialis • Humerus • Ulnar Tuberosity • elbow Flexion • Musculocutaneous N

20. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Coracobrachialis • Corocoid Process • Medial side of Humerus • flexion and adduction of shoulder • Musculocutaneous N

21. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Triceps Brachii • Long Head- Infraglenoid Tubercle, Lateral Head- posterior side of Humerus, Medial Head- posterior of Humerus, below Lateral Head • Olecrenon of Ulna • extension of shoulder and elbow joint • Radial N

22. Flexor / Pronator Compartment – Anterior of Forearm

23. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Pronator Teres • Medial Epicondyle • Radius • Pronation • Median Nerve

24. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Flexor Carpi Radialis • Medial Epicondyle • Radial side of wrist on a Metacarpal bone • flex carpus and Abduct hand • Median Nerve

25. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Palmaris Longus • Medial Epicondyle • fascial plane in palm of hand – very superficial • flexes palm • Median Nerve

26. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Flexor Carpi Ulnaris • Medial Epicondyle • Ulnar side of wrist on Metacarpal bone • flex wrist and Adduct hand • Ulnar Nerve

27. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Flexor Digitorum Superficialis • Medial Epicondyle • digits II – V on the Middle Phalynx • flex fingers, except for distal joint • Median Nerve

28. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Flexor Digitorum Profundus • Ulna • digits II – V on the Distal Phalynx • flex fingers • Median Nerve, and Ulnar Nerve

29. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Flexor Pollicis Longus • Radius • Distal Phalynx of digit I • strong thumb flexion • Median Nerve

30. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Pronator Quadratus • distal Ulna • medial Radius • pronate wrist • Median Nerve

31. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Brachioradialis • this is a Flexor in the Extensor compartment – innerv. like an Extensor • Lateral supracondylar ridge of Humerus • Styloid process of Radius • Flex forearm at elbow joint • Radial Nerve

32. Extensor / Supinator Compartment – Posterior of Forearm -

33. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Carpi Radialis Longus • lateral Epicondyle • hand on Radial side • extensor of hand; Abduction of hand • deep branch of Radial Nerve

34. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Carpi Radialis Brevis • lateral Epicondyle • metacarpal III • extend wrist and Abduct wrist; works as a unit with Extensor Carpi Radialis Longus • deep branch of Radial Nerve

35. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Carpi Ulnaris • lateral Epicondyle • Ulnar side of hand, metacarpals V • extension and Adduction of hand • deep branch of Radial Nerve

36. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Digitorum • lateral epicondyle • dorsal aspect of digits II – V • NO ACTION KNOWN • deep branch of Radial Nerve

37. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Digiti Minimi • lateral epicondyle • only digit V • extension of digit V • deep branch of Radial Nerve

38. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Abductor Pollicis Longus • dorsum of forearm • lateral aspect of base of metacarpal I • Abduct thumb to move entire thumb as unit – move to right angle with hand • deep branch of Radial Nerve

39. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Pollicis Brevis • lateral aspect of forearm • proximal phalynx of digit I • extend thumb • deep branch of Radial Nerve

40. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Pollicis Longus • lateral aspect of forearm • distal phalynx of digit I • extend thumb • deep branch of Radial N

41. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Extensor Indicis • lateral aspect of forearm • index finger – digit II • extend index finger • deep branch of Radial N

42. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Anconeus • lateral Epicondyle of Humerus • Ulna • assist in extension of elbow • Radial N

43. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Supinator • lateral epicondyle • Radius • supination of forearm • deep branch of Radial N

44. Intrinsic Hand Muscles

45. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Abductor Pollicis Brevis • Flexor Retinaculum • Metacarpal bone of digit I – lateral aspect • Abduction of thumb • Median N.

46. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Flexor Pollicis Brevis • Flexor Retinaculum • Lateral of base of proximal phalynx – digit I • Flexion btw 1st metacarpal and joint • Median N.

47. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Opponens Pollicis • Flexor Retinaculum • Lateral border of 1st metacarpal • Fine grip with thumb flexion • Median N.

48. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Adductor Pollicis • 2nd and 3rd metacarpal • Medial side of base of proximal phalynz of thumb • Adduction of thumb • Deep branch of Ulnar N.

49. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Flexor Digiti Minimi • Flexor Retinaculum • Base of proximal phalynx of little finger • Flexes little finger • Deep branch of Ulnar N.

50. 1st click=Origin2nd click=Insertion3rd click=Action4th click=Innervation • Abductor Digiti Minimi • Pisiform Bone • Base of proximal phalynx of little finger • Abducts little finger • Deep branch of Ulnar N.