Lab Test 3

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Author:
bhansen04
ID:
183702
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Lab Test 3
Updated:
2012-11-14 18:51:50
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Skeleton Muscles
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Lab Test 3
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  1. What is the appendicular skeleton?
    Bones of the upper and lower limbs and the bones that anchor them to the axial skeleton.
  2. What is the axial skeleton?
    Parts that support and protect the organs of the head, neck and trunk
  3. What 2 bones make up the shoulder girdle?
    Humerus, Clavicle and Scapula
  4. What 3 bones make up the pelivic girdle?
    Ilium, Ischium and pubis
  5. What 3 bones make up the elbow joint?
    Humerus, Radius and Ulna
  6. What are the true ribs?
    The first 7 pair
  7. What are the false ribs?
    The 5 pair under the true ribs
  8. What are the floating ribs?
    The lower 2 or 3 pair
  9. What does the spine protect?
    spinal cord
  10. What do the ribs protect?
    the heart
  11. How many vertebrae are in the adult spine?
    24
  12. What structure separates and cushions adjacent vertebrae?
    Intervertebral disc
  13. What structure is found in the intervertebral foramen?
    spinal nerves
  14. How many vertebrae typically fuse to form the adult sacrum?
    5
  15. What is the origin of a muscle?
    The less movable end of the muscle
  16. What is the insertion of a muscle?
    The more movable end of the muscle
  17. What is flexion?
    • Decrease of an angle
  18. What is extension?
    • Increase of an angle
  19. What is abduction?
    • Movement away from the midline
  20. What is adduction?
    • Movement toward the midline
  21. What is circumduction?
    • Circular movement
  22. What is rotation?
    Movement of part around its long axis (swivel arm at elbow medially or laterally)
  23. What is the main action of the frontalis muscle?
    Raises eyebrows
  24. What is the main action of the orbicularis oculi muscle?
    Closes eye as in blinking
  25. What is the main action of the zygomaticus muscle?
    Raises corner of mouth as when smiling
  26. What is the main action of the masseter muscle?
    Elevates the mandible
  27. What is the main action of the temporalis muscle?
    Elevates the mandible
  28. What is the main action of the sternocleidomastoid muscle?
    Pulls head to one side, flexes nekc or elevates sternum
  29. What is the main action of the trapezius muscle?
    Rotates, raises, pulls scapula medially or pulls scapula and shoulder downward
  30. What is the main action of the biceps brachii muscle?
    Flexes elbow and rotates hand laterally
  31. What is the main action of the brachialis muscle?
    Flexes elbow
  32. What is the main action of the triceps brachii muscle?
    Extends elbow
  33. What is the main action of the pectoralis major muscle?
    Flexes, adducts and rotates arm medially
  34. What is the main action of the latissimus dorsi muscle?
    extends, adducts, and rotates the arm medially, or pulls the shoulder downward and back
  35. What is the main action of the deltoid muscle?
    Abducts, extends and flexes the arm
  36. What is the main action of the external oblique muscle?
    Tenses abdominal wall and compresses abdominal contents
  37. What is the main action of the internal oblique muscle?
    Tenses abdominal wall and compresses abdominal contents
  38. What is the main action of the transversus abdominus muscle?
    Tenses abdominal wall and compresses abdominal contents
  39. What is the main action of the rectus abdominus muscle?
    Tenses abdominal wall and compresses abdominal contents and also flexes vertebral column
  40. What is the main action of the gracilis muscle?
    Adducts thigh and flexes knee
  41. What is the main action of the gluteus maximus muscle?
    Extends hip
  42. What is the main action of the adductor muscle group?
    Adducts and flexes the thigh
  43. What is the main action of the hamstring muscle group (biceps, femoris, semitendinosus and semimembranosis)?
    Flexes knee, rotates leg medially and laterally and extends thigh
  44. What is the main action of the quadriceps muscle group (rectus femoris, vastus lateralis, vastus medialis and vastus intermedius)?
    Extends the knee and the rectus femoris flexes the thigh
  45. What is the main action of the Tibialis anterior muscle?
    Doriplexion and inversion of foot
  46. What is the main action of the gastrocnemius muscle?
    Plantarflexion of the foot and flexes the knee
  47. What is the main action of the soleus muscle?
    Plantarflexion of the foot

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