Medical Terminology Chapter 9

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  1. skeletal muscles
    voluntary muscles that contract and relax in response to conscious thought
  2. cardiac muscle
    and involuntary muscle that is not under conscious control
  3. smooth muscles
    involuntary, nonstriated muscles that form a continuous, thin layer around many organs and structures
  4. tendon
    a cordlike, nonelastic, white fibrous band of connective tissue
  5. bursa
    a thin sac of synovial membrane filled with synovial fluid, acts as a cushion to reduce friction where a tendon rubs against the bone in a joint
  6. fascia
    a thin connective tissue wraps around each muscle that joins with the tendon
  7. aponeurosis
    a flat, wide, white fibrous sheet of connective tissue, sometimes composed of several tendons that attaches a flat muscle to a bone or to other deeper muscles.
  8. retinaculum
    a nearly translucent band of fibrous tissue and fascia that holds down the tendons that cross the wrist and ankle
  9. biceps brachii
    one end divides into two parts of heads
  10. brachioradialis
    radial bone
  11. frontalis
    moves the forehead to raise the eyebrows or wrinkle the skin
  12. temporalis
    moves the mandible upward adn backward
  13. orbicularis oculi
    closes the eyelids or presses them together
  14. orbicularis oris
    closes the lips or presses them together
  15. masseter
    moves the mandible upward
  16. buccinator
    moves the cheeks
  17. sternocleidomastoid
    bends the head toward the sternum and turns the head to either side
  18. platysma
    moves the mandible down
  19. rectus femoris
    bends the upper leg toward the abdomen (flexion); straightens the lower leg (extension)
  20. sartorius
    bends the upper leg toward the abdomen (flexion) and rotates it laterally
  21. vastus lateralis
    bends the upper leg toward the abdomen (flexion); straightens the lower leg (extension)
  22. vastus medialis
    bends the upper leg toward the abdomen (flexion); straightens the lower leg (extension)
  23. peroneus longus
    raises the lateral edge of the foot (eversion) and bends the foot downward (plantar flexion)
  24. tibialis anterior
    bends the foot up towards the leg (dorsiflexion)
  25. biceps femoris
    move the upper leg posteriorly (extension) and bends the lower leg toward the buttocks (flexion)
  26. semitendinosus and semimenbranosus
    move the upper leg posteriorly (extension), bend the lower leg toward the buttocks (flexion) and rotate the leg medially
  27. gastrocnemius
    bends the foot downward (plantar flexion) and lets you stand on tiptoe
  28. muscle fasicle
    a bundle of individual muscle fibers
  29. muscle fiber
    one long muscle cell that has hundreds of nuclei along its length to speed up the chemical processes that must occur before it can contract
  30. myofibrils
    contain strands of the protein actin and thick strands of the myosin.

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Medical Terminology Chapter 9
2013-06-21 23:59:27

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