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Entrance Slip

Entrance Slip. Identify the direction that the Internal Obliques , External Obliques , Transversus Abdominis , & Rectus Abdominis run. Layer the muscles above in order from deep to most superficial.

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Entrance Slip

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  1. Entrance Slip • Identify the direction that the Internal Obliques, External Obliques, TransversusAbdominis, & Rectus Abdominis run. • Layer the muscles above in order from deep to most superficial. • Describe a function of the TransversusAbdominis and the Rectus Abdominis that separate them from the other oblique muscles.

  2. Thigh Movers! • Most muscles are attached to the femur and to part of the pelvic girdle. • The anterior portion primarily flexes the thigh • Psoas major Iliacus • The posterior group extends, abducts or rotates the thigh • Gluteus maximus • Gluteus medius • Gluteus minimus • Piriformis • Tensor fasciae latae

  3. Anterior Group- Flex the thigh Psoas major Iliacus A long, thick muscle Connects the lumbar vertebrae to the femur A large, fan-shaped muscle Lies along the lateral side of the Psoas major They advance the lower limb in walking movements Psoas major Iliacus

  4. Posterior Group- extends, abducts,& rotates thigh Gluteus maximus • Largest muscle in the body • Covers a large part of each buttock • Connects the ilium, sacrum & coccyx to the femur by fascia of the thigh • Extends the thigh; helps straighten the lower limb at the hip when walking, running & climbing; also used to raise the body from a sitting position

  5. Gluteus Maximus Gluteus maximus

  6. Posterior Group- extends, abducts,& rotates thigh Gluteus medius • Partly covered by the gluteus maximus • Fibers extend from the ilium to the femur • The muscle abducts the thigh and rotates it medially

  7. Gluteus medius Gluteus medius

  8. Posterior Group- extends, abducts,& rotates thigh Gluteus minimus • Partly covered by the gluteus medius • Fibers extend from the ilium to the femur • The muscle abducts the thigh and rotates it medially

  9. Gluteus minimus Gluteus minimus

  10. Posterior Group- extends, abducts,& rotates thigh Piriformis • Shaped like a pyramid • Located inferior to the gluteus minimus • Abducts & laterally rotates the thigh; also stabilizes the hip

  11. Piriformis

  12. Piriformis

  13. Posterior Group- extends, abducts,& rotates thigh TFL Tensor fasciae latae • Connects the ilium to the fascia of the thigh & continues downward to the tibia • Abducts & flexes the thigh and rotates it medially

  14. Thigh Adductors Pectineus • Muscle runs from the spine of the pubis to the femur • Flexes & adducts the thigh Adductor brevis • A short, triangular muscle • Runs from the pubic bone to the femur • Adducts and assists in flexing the thigh

  15. Piriformis Pectineus Adductor brevis

  16. Thigh Adductors Adductor longus • Long, triangular muscle • Runs from the pubic bone to the femur • Adducts the thigh & assists in flexing & rotating it laterally Adductor magnus • Triangular muscle • Connects the ischium to the femur • Adducts the thigh & portions assist in flexing & extending the thigh • Largest adductor of the thigh

  17. Pectineus Adductor longus Adductor brevis Adductor magnus Gracilis

  18. Thigh Adductors Gracilis • Long, straplike • Passes from the public bone to the tibia • Adducts the thigh & flexes the leg at the knee

  19. Pectineus Adductor longus Adductor brevis Gracilis Adductor magnus

  20. Muscles that move the leg… Muscles that move the leg connect the tibia or fibula to the femur to the pelvic girdle. Flexors of the KNEE Extensors of the KNEE Biceps femoris Semitendinosus Semimembranosus Sartorius Quadriceps femoris group

  21. Flexors of the leg… Biceps femoris • One of the hamstring muscles (its tendon feels like a lateral ridge behind the knee) • Two heads one attached to the ischium & the femur • Passes along the back of the thigh on the lateral side connecting to the proximal ends of the fibula & tibia • Action flexes & rotates the leg laterally & extends the thigh

  22. Flexors of the leg… Semitendinosus • Another hamstring muscle; named tendinous b/c it becomes tendinous in the middle of the thigh • Long, bandlike muscle on the back of the thigh toward the medial side • Connecting the ischium to the proximal end of the tibia, inserting as a long, cordlike tendon • Action  flexes and rotates the leg medially & extends the thigh

  23. Flexors of the leg… Semimembranosus • A third hamstring muscle • Most medially located muscle in the back of the thigh • Connects the ischium to the tibia • Action flexes and rotates the leg medially & extends the thigh

  24. Flexors of the leg… Sartorius • Elongated, strap-like muscle • Passes obliquely across the front of the thigh & descends over the medial side of the knee • Connects the ilium to the tibia & flexes the leg & thigh while abducting the thigh & rotating it laterally

  25. Extensors of the leg…

  26. Extensors of the leg… Quadriceps femoris • Occupies the front & sides of the thigh; extends the knee • Four parts: • Rectus femoris • Vastuslateralis • Vastusmedialis • Vastusintermedius • These muscles connect the ilium & femur to the patellar tendon, which passes over the front of the knee & attaches to the patella

  27. Extensors of the leg…

  28. Rectus femoris

  29. Vastuslateralis

  30. Vastusmedialis

  31. Vastusintermedius

  32. Extensors of the leg…

  33. Extensors of the leg…

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