Muscle Exam Lab · Identify the Muscle

These mimic the reasoning behind written muscle exams. Name the muscle before opening the answer.

1. Origin: occiput/nuchal ligament/C7-T12 SP. Insertion: clavicle, acromion, scapular spine.

Trapezius.

2. C1-C4 transverse processes to superior medial scapular border.

Levator scapulae.

3. T2-T5 SP to medial scapular border below spine; retracts/downwardly rotates scapula.

Rhomboid major.

4. Upper ribs to anterior medial scapular border; protracts/upwardly rotates; long thoracic nerve.

Serratus anterior.

5. Supraspinous fossa to greater tubercle.

Supraspinatus.

6. Infraspinous fossa to greater tubercle; lateral rotation.

Infraspinatus.

7. Subscapular fossa to lesser tubercle.

Subscapularis.

8. Inferior angle/lateral scapula to medial lip of intertubercular sulcus.

Teres major.

9. Lower trunk/iliac/rib origins to floor of intertubercular sulcus; thoracodorsal nerve.

Latissimus dorsi.

10. Ribs 3-5 to coracoid process.

Pectoralis minor.

11. Coracoid process to medial humeral shaft; musculocutaneous nerve.

Coracobrachialis.

12. Anterior distal humerus to ulna; strong elbow flexor in all forearm positions.

Brachialis.

13. Lateral supracondylar ridge to distal radius; flexes elbow strongest in neutral.

Brachioradialis.

14. Medial epicondyle/coronoid to lateral radius; pronates forearm.

Pronator teres.

15. Distal anterior ulna to distal anterior radius; prime pronator.

Pronator quadratus.

16. Lateral epicondyle/ulna to proximal radius; supinates.

Supinator.

17. Pubis to xiphoid/costal cartilage 5-7.

Rectus abdominis.

18. Iliac crest to 12th rib/lumbar transverse processes.

Quadratus lumborum.

19. Iliac fossa to lesser trochanter; femoral nerve.

Iliacus.

20. T12-L5 to lesser trochanter; lumbar anterior rami.

Psoas major.

21. Posterior ilium/sacrum to IT tract/gluteal tuberosity; inferior gluteal nerve.

Gluteus maximus.

22. Lateral ilium to greater trochanter; pelvic stabilization; superior gluteal nerve.

Gluteus medius.

23. ASIS/anterior iliac crest into IT tract.

Tensor fasciae latae.

24. Anterior sacrum to greater trochanter; lateral rotation of extended hip.

Piriformis.

25. AIIS to tibial tuberosity through patella; crosses hip and knee.

Rectus femoris.

26. ASIS to medial proximal tibia; longest muscle in body.

Sartorius.

27. Ischial tuberosity to fibular head.

Biceps femoris long head.

28. Ischial tuberosity to medial proximal tibia; pes anserinus.

Semitendinosus.

29. Pubis to linea aspera; adduction; obturator nerve.

Adductor longus/brevis family.

30. Pubis/ischium to linea aspera/adductor tubercle; dual innervation.

Adductor magnus.

31. Femoral condyles to calcaneus via Achilles; crosses knee and ankle.

Gastrocnemius.

32. Posterior tibia/fibula to calcaneus via Achilles; plantarflexion only at ankle.

Soleus.

33. Lateral tibia to medial cuneiform/first metatarsal; dorsiflexion/inversion.

Tibialis anterior.

34. Fibular head/lateral fibula to plantar first metatarsal/medial cuneiform; eversion.

Fibularis longus.

35. C2 SP to C1 TP; rotates atlas/head ipsilaterally.

Obliquus capitis inferior.

36. Manubrium/medial clavicle to mastoid; contralateral rotation.

SCM.

37. Temporal fossa to coronoid process; elevates/retracts mandible.

Temporalis.

38. Zygomatic arch to mandibular angle; elevates mandible.

Masseter.

39. Xiphoid/lower ribs/lumbar crura to central tendon; phrenic nerve.

Diaphragm.

40. Lateral epicondyle to olecranon/proximal ulna; assists elbow extension.

Anconeus.