class 6 ap1 muscles

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  • 1. Muscles of the Pelvis and Thigh

2. Review Week 5 3. Latissimus Dorsi

  • P:SPs of T7-L5, posterior sacrum, and the posterior iliac crest
  • D:Medial lip of bicipital groove of the humerus
  • Medially rotates the arm at the shoulder joint
  • Adducts the arm at the shoulder joint
  • Extends the arm at the shoulder joint
  • Anteriorly tilts the pelvis at the lumbosacral joint

4. Rhomboid Major and Minor

  • P:SPs of C7-T5
  • D:Medial border of the scapula from the root of the spine of the scapula to the inferior angle of the scapula
  • Retracts (Adducts) the scapula at the scapulocostal joint
  • Elevates the scapula

5. Serratus Anterior

  • O:Ribs 1-9
  • I:Anterior surface of the entire medial border of the scapula
  • Protracts (abducts) the scapula at the scapulocostal joint
  • Upwardly rotates the scapula at the scapulocostal joint

6. Serratus Posterior Superior

  • 1.Elevates ribs #2-5 at the sternocostal and costospinal joints

7. Serratus Posterior Inferior

  • 1.Depresses ribs #9-12 at the sternocostal and costospinal joints

8. Erector Spinae Group

  • O:Pelvis
  • I:Spine, ribcage, and head
  • Extends the trunk, neck, and the head at the spinal joints
  • Laterally flexes the trunk, neck, and head at the spinal joints
  • Ipsilaterally rotates the trunk, neck, and head at the spinal joints
  • Anteriorly tilts the pelvis at the lumbosacral joint

9. Transversospinalis Group

  • O:Pelvis
  • I:Spine and the head
  • Extends the trunk, neck, and head at the spinal joints
  • Laterally flexes the trunk, neck, and head at the spinal joints
  • Contralaterally rotates the trunk and the neck at the spinal joints
  • Anteriorly tilts the pelvis at the lumboscaral joint

10. Quadratus Lumborum

  • P:12 thrib and the TPs of L1-L4
  • D:Posterior Iliac crest
  • Elevates the pelvis at the lumbosacral joint
  • Anteriorly tilts the pelvis at the lumbosacral joint
  • Laterally flexes the trunk at the spinal joints
  • Extends the trunk at the spinal joints

11. Pectoralis Major

  • P:Medial clavicle, sternum, and the costal cartilages of ribs 1-7
  • D:Lateral lip of the bicipital groove of the humerus
  • 1.Adducts the arm at the shoulder joint
  • 2.Medially rotates the arm at the shoulder joint
  • 3.Flexes the arm at the shoulder joint (clavicular head)

12. Pectoralis Minor

  • P:Ribs 3-5
  • D:Coracoid process of the scapula
  • Protracts (abducts) the scapula at the scapulocostal joint
  • Depresses the scapula at the scapulocostal joint
  • Elevates ribs 3-5 at the sternocostal and costospinal joints

13. Diaphragm

  • Increases the volume of the Thoracic Cavity (inspiration)

14. RectusAbdominis

  • P:Pubis
  • D:Xiphoid process and the cartilage of ribs 5-7
  • Flexes the trunk at the spinal joints
  • Posteriorly tilts the pelvis at the lumbosacral joint

15. External Oblique

  • P:Anterior iliac crest, pubic bone, and the abdominal aponeurosis
  • D:Lower 8 ribs (5-12)
  • Flexes the trunk at the spinal joints
  • Laterally flexes the trunk at the spinal joints
  • Contralateral rotates the trunk at the spinal joints
  • Posteriorly tilts the pelvis at the lumbosacral joints

16. Internal Oblique

  • O:Inquinal ligament, iliac crest, and the thoracolumbar fascia
  • I:Lower three ribs (10-12) and the abdominal aponeurosis
  • Flexes the trunk at the spinal joints
  • Laterally flexes the trunk at the spinal joints
  • Ipsilaterally rotates the trunk at the spinal joints
  • Posteriorly tilts the pelvis at the lumbosacral joints

17. Transverse Abdominis

  • Compresses the abdominal contents

18. 19. Psoas Major

  • P:Anterolateral lumbar spine
  • D:Lesser trochanter of the femur
  • Flexes the thigh at the hip joint
  • Laterally rotates the thigh at the hip joint
  • Flexes the trunk at the spinal joints
  • Laterally flexes the trunk at the spinal joints
  • Anteriorly tilts the pelvis at the hip joints

20. 21. 22. Iliacus

  • P:Internal Ilium
  • D:Lesser trochanter of the femur
  • Flexes the thigh at the hip joint
  • Laterally rotates the thigh at the hip joint
  • Anteriorly tilts the pelvis at the hip joints

23. 24. Psoas Minor

  • Flexes the trunk at the spinal joints
  • Posteriorly tilts the pelvis at the lumbosacral joint

25. 26. 27. Gluteus Maximus

  • P:Posterior iliac crest, posterolateral sacrum, and the coccyx
  • D:Iliotibial band (ITB) and gluteal tuberosity of the femur
  • Extends the thigh at the hip joint
  • Laterally rotates the thigh at the hip joint
  • Abducts the thigh at the hip joint (upper 1/3)
  • Adducts the thigh at the hip joint (lower 2/3)
  • Posteriorly tilts the pelvis at the hip joint

28. 29. 30. 31. Gluteus Medius

  • P:External Ilium
  • D:Greater trochanter of the femur
  • Abducts the thigh at the hip joint (entire muscle)
  • Flexes the thigh at the hip joint (anterior fibers)
  • Medially rotates the thigh at the hip joint (anterior fibers)
  • Extends the thigh at the hip joint (posterior fibers)
  • Laterally rotates the thigh at the hip joint (posterior fibers)
  • Posteriorly tilts the pelvis at the hip joint (posterior fibers)
  • Anteriorly tilts the pelvis at the hip joint (anterior fibers)

32. 33. Gluteus Minimus

  • P:External Ilium
  • D:Greater trochanter of the femur
  • Abducts the thigh at the hip joint (entire muscle)
  • Flexes the thigh at the hip joint (anterior fibers)
  • Medially rotates the thigh at the hip joint (anterior fibers)
  • Extends the thigh at the hip joint (posterior fibers)
  • Laterally rotates the thigh at the hip joint (posterior fibers)
  • Posteriorly tilts the pelvis at the hip joint (posterior fibers)
  • Anteriorly tilts the pelvis at the hip joint (anterior fibers)

34. 35. Deep Lateral Rotators of the Thigh

  • Piriformis
  • Superior Gemellus
  • Obturator Internus
  • Inferior Gemellus
  • Obturator Externus
  • Quadratus Femoris

36. Piriformis

  • P:Anterior sacrum
  • D:Greater trochanter of the femur
  • 1.Laterally rotates the thigh at the hip joint

37. 38. 39. Tensor Fasciae Latae (TFL)

  • P:Anterior Superior Iliac Spine
  • D:Iliotibial band (ITB)
  • Flexes the thigh at the hip joint
  • Abducts the thigh at the hip joint
  • Medially rotates the thigh at the hip joint
  • Anteriorly tilts the pelvis at the hip joint

40. 41. Sartorius

  • P:Anterior superior iliac spine (ASIS)
  • D:Pes Anserine Tendon (at the proximal anteromedial tibia)
  • Flexes the thigh at the hip joint
  • Abducts the thigh at the hip joint
  • Laterally rotates the thigh at the hip joint
  • Flexes the leg at the knee joint
  • Anteriorly tilts the pelvis at the hip joint

42. Pes Anserine

  • The three muscles that attach here are from anterior to posterior:
  • Sartorius
  • Gracilis
  • Semitendinosus

43. 44. 45. Rectus Femoris

  • P:Anterior Inferior iliac spine (AIIS)
  • D:Tibial Tuberosity
  • Extends the leg at the knee joint
  • Flexes the thigh at the hip joint
  • Anteriorly tilts the pelvis at the hip joint

46. 47. 48. Vastus Lateralis

  • P:Linea Aspera of the femur
  • D:Tibial tuberostiy
  • 1.Extends the leg at the knee joint

49. 50. 51. Vastus Medialis

  • P:Linea Aspera of the femur
  • D:Tibial tuberosity
  • 1.Extends the leg at the knee joint

52. 53. 54. Vastus Intermedius

  • P:Anterior shaft and the linea aspera of the femur
  • D:Tibial