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

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Presentation on theme: "Musculoskeletal Anatomy Quiz The bones, muscles and muscular action below the belt…"— Presentation transcript:

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) 1. Iliac crest 2. Iliac fossa 3. Superior (posterior) gluteal line 4. Middle (anterior) gluteal line 5. Inferior gluteal line 6. Anterior superior iliac spine 7. Anterior inferior iliac spine 8. Posterior superior iliac spine 9. Posterior inferior iliac spine 10. Greater sciatic notch 11. Ischial tuberosity 12. Ischial spine 13. Lesser sciatic notch 14. Ramus of ischium 15. Pubic crest 16. Pubic symphysis 17. Body of pubis 18. Superior ramus of pubis 19. Inferior ramus of pubis A. Ilium B. Ischium C. Pubis D. Acetabulum E. Obturator foramen F. Sacrum G. Coccyx

5 Femur 1. Head 2. Neck 3. Greater trochanter 4. Lesser trochanter 5. Intertrochanteric line 6. Intertrochanteric crest 7. Trochanter fossa 8. Quatrate tubercle 9. Gluteal tuberosity 10. Linea aspera 11. Adductor tubercle 12. Medial epicondyle 13. Lateral epicondyle 14. Patellar surface 15. Medial supracondylar line 16. Lateral supracondylar line 17. Medial condyle 18. Lateral condyle 19. Popliteal surface 20. Intercondylar notch

6 Tibia and Fibula 1. Styloid process 2. Head 3. Neck 4. Interosseous border 5. Lateral malleolus 6. Shaft 7. Medial condyle 8. Lateral condyle 9. Tibial tuberosity 10. Soleal line 11. Shaft 12. Interosseous border 13. 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 Origin (3) Insertion (3) Action  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

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  lateral ilium  greater trochanter of femur  abducts thigh Origin Insertion Action

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  ischial tuberosity  medial, proximal surface of tibia  flexes knee  extends thigh Origin Insertion Action (2)

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  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 Origin medialis lateralis intermedius Insertion Action

31 Dorsiflexors

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

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

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

35 Plantar Flexors

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

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

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

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

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 1. Gluteus medius 2. Gluteus minimus 3. Tensor fasciae latae 4. Petineus 5. Adductor longus 6. Adductor brevis 7. Adductor magnus (horizontal fibers)

43 Leg Flexor & Extensor 1. Gluteus maximus 2. Biceps femoris (long head) 3. Semitendinosus 4. Semimembranosus 5. Adductor magnus (posterior portion) 1. Iliopsoas 2. Pectineus 3. Tensor fasciae latae 4. Adductor brevis 5. Adductor longus 6. Adductor magnus (anterior portion) 7. Rectus femoris 8. Sartorius Extensors Flexors

44 Leg Adductors & Abductors 1. Gluteus medius 2. Gluteus minimus 3. Tensor fasciae latae 4. Sartorius 1. Adductor brevis 2. Adductor longus 3. Adductor magnus 4. Gracilis Adductors Abductors

45 Knee 1. Vastus lateralis 2. Vastus intermedius 3. Vastus medialis 4. Rectus femoris 5. Tensor fascia latae 1. Biceps femoris 2. Semitendinosus 3. Semimembranosus 4. Sartorius 5. Gracilis 6. Gastrocnemius Extensors Flexors

46 Knee Rotators  Biceps femoris 1. Semitendinosus 2. Semimembranosus 3. Popliteus 4. Gracilis 5. sartorius Lateral Medial

47 Ankle 1. Tibialis anterior 2. Extensor digitorum longus 3. Peroneus tertius 4. Extensor hallucis longus 1. Gastrocnemius 2. Soleus 3. Plantaris 4. Peroneus longus 5. Peroneus brevis 6. Tibialis posterior 7. Flexor hallucis longus 8. Flexor digitorum longus (not shown) Dorsiflexors Plantar flexors

48 Foot 1. Tibialis anterior 2. Tibialis posterior 1. Peroneus tertius 2. Peroneus longus 3. Peroneus brevis Invertors Evertors


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