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Musculoskeletal Anatomy Quiz

Musculoskeletal Anatomy Quiz. The bones, muscles and muscular action below the belt…. What’s to Come. Quick review of the bones Origin, insertion, and action of muscles Muscles categorized by their action Test yourself with the diagram and click for the answer…. All images scanned from:

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Musculoskeletal Anatomy Quiz

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  1. Musculoskeletal Anatomy Quiz The bones, muscles and muscular action below the belt…

  2. What’s to Come • Quick review of the bones • Origin, insertion, and action of muscles • Muscles categorized by their action • Test yourself with the diagram and click for the answer… All images scanned from: Sieg & Adams, Illustrated Essentials of Musculoskeletal Anatomy

  3. Bones in Review

  4. Pelvis (letters first) • Iliac crest • Iliac fossa • Superior (posterior) gluteal line • Middle (anterior) gluteal line • Inferior gluteal line • Anterior superior iliac spine • Anterior inferior iliac spine • Posterior superior iliac spine • Posterior inferior iliac spine • Greater sciatic notch • Ischial tuberosity • Ischial spine • Lesser sciatic notch • Ramus of ischium • Pubic crest • Pubic symphysis • Body of pubis • Superior ramus of pubis • Inferior ramus of pubis Ilium Ischium Pubis Acetabulum Obturator foramen Sacrum Coccyx

  5. Femur • Head • Neck • Greater trochanter • Lesser trochanter • Intertrochanteric line • Intertrochanteric crest • Trochanter fossa • Quatrate tubercle • Gluteal tuberosity • Linea aspera • Adductor tubercle • Medial epicondyle • Lateral epicondyle • Patellar surface • Medial supracondylar line • Lateral supracondylar line • Medial condyle • Lateral condyle • Popliteal surface • Intercondylar notch

  6. Tibia and Fibula • Styloid process • Head • Neck • Interosseous border • Lateral malleolus • Shaft • Medial condyle • Lateral condyle • Tibial tuberosity • Soleal line • Shaft • Interosseous border • Medial malleolus

  7. Foot (without animation)

  8. Extensors of Spine

  9. Spinalis thoracis / cervicis • spinous processes of T11-12, L1-2 • transverse processes of T6-10 • transverse processes of T1-6 • Spinous processes of T1-8 • Spinous processes of C6-7, T1-4 • Spinous processes of C2-5 • extend and rotate vertebral column Origin (3) Insertion (3) Action

  10. semispinalis thoracis / cervicus • spinous processes of T11-12, L1-2 • transverse processes of T6-10 • transverse processes of T1-6 • Spinous processes of T1-8 • Spinous processes of C6-7, T1-4 • Spinous processes of C2-5 • extend and rotate vertebral column Origin (3) Insertion (3) Action

  11. Leg / Hip Flexors

  12. Psoas Major • bodies, transverse processes lumbar vertebrae • lesser trochanter of femur • flexes and rotates thigh laterally • flexes vertebrae Origin Insertion Action (2)

  13. Iliacus • iliac fossa of ilium • lesser trochanter of femur • flexes and rotates thigh laterally • flexes vertebrae Origin Insertion Action (2)

  14. Leg Extensors & Abductors

  15. Gluteus Maximus • iliac crest, sacrum, coccyx • gluteal tuberosity of femur • extends and rotates thigh laterally Origin Insertion Action

  16. Gluteus Medius Origin Insertion Action • lateral ilium • greater trochanter of femur • abducts thigh

  17. Gluteus Minimus • lateral ilium • greater trochanter of femur • abducts thigh Origin Insertion Action

  18. Tensor Fasciae Latae • anterior iliac crest • tibia via iliotibial tract • abducts, flexes thigh Origin Insertion Action

  19. Leg Adductors

  20. Adductor Longus • pubic crest near symphysis pubis • linea aspera of femur • adducts, flexes thigh Origin Insertion Action Anterior

  21. Adductor Magnus • ischial tuberosity • pubis • linea aspera of femur • adductor tubercle • adducts femur • anterior fibers assist flexion of femur at hip • Posterior fibers assist extension of femur at hip Origin (2) Insertion (2) Action (3)

  22. Gracilis • pubic ramus • medial surface of tibial shaft • adducts thigh • flexes leg at knee Origin Insertion Action (2)

  23. Leg Flexors

  24. Biceps Femoris • long head - ischial tuberosity • short head - linea aspera of femur • head of fibula • lateral condyle of tibia • flexes knee • extends thigh Origin (2) Insertion (2) Action (2)

  25. Semitendinosus Origin Insertion Action (2) • ischial tuberosity • medial, proximal surface of tibia • flexes knee • extends thigh

  26. Semimembranosus • ischial tuberosity • medial condyle of tibia • flexes knee • extends thigh Origin Insertion Action (2)

  27. Sartorius • anterior superior iliac spine • medial surface of tibia • proximal surface of tibia • flexes leg and thigh • rotates thigh laterally (crosses leg) Origin Insertion (2) Action (2)

  28. Leg Extensors

  29. Rectus Femoris • anterior inferior iliac spine • patella by common tendon; continues as ligament to tibial tuberosity • extends leg at knee Origin Insertion Action

  30. Vestus: medialis, lateralis intermedius Origin medialis lateralis intermedius Insertion Action • anterior/medial surface femur • greater trochanter femur • anterior lateral shaft of femur • patella by common tendon; continues as ligament to tibial tuberosity • extends leg at knee

  31. Dorsiflexors

  32. Tibialis Anterior Origin Insertion (2) Action (2) • lateral condyle/surface of tibia • 1st meta tarsal • 1st cuneiform • dorsiflexion • inversion of foot

  33. Peroneus Tertius • distal third anterior fibula • 5th metatarsal • dorsiflexion • eversion of foot Origin Insertion Action (2)

  34. Extensor Digitorum Longus Origin (2) Insertion Action (3) • lateral condyle of the tibia • anterior surface of fibula • dorsal surfaces of 2nd, 3rd phlanges of 4 lateral toes • dorsiflexion • eversion • toe extension

  35. Plantar Flexors

  36. Gastrocnemius Origin Insertion Action (2) • lateral/medial condyles of femur • posterior surface of calcaneus • plantar flexion • flexion of leg at knee

  37. Soleus Origin (2) Insertion Action • head/shaft of fibula • posterior tibial surface • posterior surface calcaneus • plantar flexion of foot

  38. Flexor Digitorum Longus Origin Insertion Action (3) • posterior surface of tibia • distal phlanges of 4 lateral toes • plantar flexion • inversion of foot • flexion of four lateral toes

  39. Tibialis Posterior Origin Insertion (2) Action (2) • lateral condyle posterior tibial/fibular surface • tarsal bones • metatarsal bones • plantar flexion • inversion of foot

  40. Peroneus Longus • lateral condyle of tibia • fibular head/shaft • tarsal • metatarsals • plantar flexion • eversion of foot Origin (2) Insertion (2) Action (2)

  41. Muscles by Action

  42. Hip / Leg Medial Rotator • Gluteus medius • Gluteus minimus • Tensor fasciae latae • Petineus • Adductor longus • Adductor brevis • Adductor magnus (horizontal fibers)

  43. Leg Flexor & Extensor Flexors • Gluteus maximus • Biceps femoris (long head) • Semitendinosus • Semimembranosus • Adductor magnus (posterior portion) • Iliopsoas • Pectineus • Tensor fasciae latae • Adductor brevis • Adductor longus • Adductor magnus (anterior portion) • Rectus femoris • Sartorius Extensors

  44. Leg Adductors & Abductors Abductors • Gluteus medius • Gluteus minimus • Tensor fasciae latae • Sartorius Adductors • Adductor brevis • Adductor longus • Adductor magnus • Gracilis

  45. Knee Flexors • Vastus lateralis • Vastus intermedius • Vastus medialis • Rectus femoris • Tensor fascia latae • Biceps femoris • Semitendinosus • Semimembranosus • Sartorius • Gracilis • Gastrocnemius Extensors

  46. Knee Rotators • Biceps femoris Medial • Semitendinosus • Semimembranosus • Popliteus • Gracilis • sartorius Lateral

  47. Ankle Dorsiflexors • Tibialis anterior • Extensor digitorum longus • Peroneus tertius • Extensor hallucis longus Plantar flexors • Gastrocnemius • Soleus • Plantaris • Peroneus longus • Peroneus brevis • Tibialis posterior • Flexor hallucis longus • Flexor digitorum longus (not shown)

  48. Foot • Tibialis anterior • Tibialis posterior Evertors • Peroneus tertius • Peroneus longus • Peroneus brevis Invertors

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