ap lab exam 3

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katydurkin
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ap lab exam 3
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ap lab exam 3
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  1. List two of the seven criteria listed in your lab manual that are used to name muscles?
    direction of fibers, location
  2. What are the individual contractile units of a muscle cell called?
    sarcomeres
  3. If a muscle contracts against a load that is too heavy for the muscle to lift, what type of contraction is the muscle demonstrating?
    isometric contraction
  4. By steadily increasing the number of motor units that are activated, we produce a steady increase in the force produced by a muscle. This process is called __________________?
    recruitment
  5. A single contraction of a muscle is called a _____________?
    twitch
  6. If we stimulate a muscle, and then stimulate it again immediately after it has been allowed to relax, we observe that the second contraction of the muscle is slightly greater than the first. What do we call this phenomenon?
    treppe
  7. What do we call muscles that are primarily responsible for producing a specific movement?
    agonists
  8. Define "origin" as it applies to skeletal muscles.
    immovable attachment site of a muscle
  9. Name one action of the zygomaticus minor muscle.
    elevates corners of mouth
  10. Name one action of the semimembanosus muscle.
    extends thigh
  11. Name one action of the pectoralis major muscle.
    flexes arm
  12. Name one action of the deltoid muscle.
    extends humerus
  13. Name one insertion of the infraspinatus muscle.
    greater tubercle of humerus
  14. Name one insertion of the gracilis muscle.
    tibia
  15. Name one insertion of the extensor digitorum muscle.
    distal phalanges 2-5
  16. Name one insertion of the vastus medialis muscle.
    patella
  17. Name one origin of the semitendinosus muscle.
    ishial tuberosity
  18. Name one origin of the buccinator muscle.
    maxilla
  19. Name one origin of the sternocleidomastoid muscle.
    clavicle
  20. Name one origin of the tibialis anterior muscle.
    tibia
  21. What neurotransmitter do motor neurons use to stimulate muscle cells?
    acetylcholine
  22. If we increase the frequence of stimulation of a muscle untill we acheive a steady sustained contraction, we will have caused what phenomenon?
    tetanus
  23. A neuron and all of the muscle cells that it stimulates are together called a _________________?
    motor unit
  24. What do we call muscles that aid the action of other muscles by reducing undesirable or unnecessary movement?
    synergists
  25. Define "insertion" as it applies to skeletal muscles.
    movable attachment site of a muscle
  26. Name one action of the sternocleidomastoid muscle.
    rotates head
  27. Name one action of the external oblique muscle.
    rotates vertebral column
  28. Name one action of the supraspinatus muscle.
    abduction of humerus
  29. Name one insertion of the trapezius muscle.
    clavicle
  30. Name one insertion of the zygomaticus major muscle.
    corner of mouth
  31. Name one origin of the masseter muscle.
    maxilla
  32. Name one origin of the external oblique muscle.
    ribs 5-12
  33. Name one origin of the gracilis muscle.
    body of pubis
  34. Name one origin of the flexor carpi radialis muscle.
    medial epicondyle of humerus
  35. If we require a muscle to contract until it starts to run out of ATP, what do we call the state of the muscle at that point?
    fatigue
  36. What do we call the period of time between the application of a stimulus to a muscle and the first observable response or movement of the muscle?
    latent period
  37. What do we call muscles that oppose or reverse a particular movement?
    antagonists
  38. Name one action of the infraspinatus muscle.
    lateral rotation of humerus
  39. Name one action of the rectus abdominis muscle.
    rotates vertebral column
  40. Name one action of the brachialis muscle.
    flexes forearm
  41. Name one insertion of the rectus abdominis muscle.
    xiphoid process
  42. Name one insertion of the semimembranosus muscle.
    medial condyle of tibia
  43. Name one insertion of the flexor carpi radialis muscle.
    metacarpals 2 and 3
  44. Name one insertion of the biceps brachii muscle.
    radial tuberosity
  45. Name one origin of the infraspinatus muscle.
    infraspinous fossa of scapula
  46. Name one origin of the trapezius muscle.
    occipital bone
  47. Name one action of the rectus femoris muscle.
    extends knee
  48. Name one action of the triceps brachii muscle.
    extends forearm
  49. Name one action of the flexor carpi radialis muscle.
    flexes wrist
  50. Name one insertion of the external oblique muscle.
    iliac crest
  51. Name one origin of the supraspinatus muscle.
    supraspinous fossa of scapula
  52. Name one origin of the orbicularis oculi muscle.
    frontal bone
  53. Name one origin of the pectoralis major muscle.
    sternum
  54. Name one origin of the biceps brachii muscle.
    shoulder joint
  55. What neurotransmitter do motor neurons use to stimulate muscle cells?
    acetylcholine
  56. Name one action of the extensor digitorum muscle.
    extends fingers
  57. Name one action of the biceps brachii muscle.
    flexion of forearm
  58. Name one insertion of the sternocleidomastoid muscle.
    mastoid process of temporal bone
  59. Name one insertion of the pectoralis major muscle.
    intertubercular groove of humerus
  60. Name one origin of the zygomaticus minor muscle.
    zygomatic bone
  61. Name one origin of the brachialis muscle.
    humerus
  62. Name one origin of the extensor digitorum muscle.
    lateral epicondyle of humerus
  63. Name one action of the semitendinosus muscle.
    extends thigh
  64. Name one insertion of the masseter muscle.
    ramus of mandible
  65. Name one insertion of the gracilis muscle.
    tibia
  66. Name one action of the buccinator muscle.
    compresses cheek
  67. Name one insertion of the brachialis muscle.
    coronoid process of ulna
  68. Name one insertion of the semitendinosus muscle.
    tibia
  69. Name one action of the masseter muscle.
    closes jaw
  70. Name one action of the tibialis anterior muscle.
    dorsiflexion
  71. Name one insertion of the triceps brachii muscle
    olecranon process of ulna
  72. Name one insertion of the gastrocnemius muscle.
    calcaneus
  73. Name one origin of the rectus abdominis muscle.
    pubic crest
  74. Name one origin of the vastus medialis muscle.
    linea aspera of femur
  75. What do we call muscles that immobilize the origin of another muscle so that all of the tension is exerted at the insertion?
    fixators
  76. Name one action of the gastrocnemius muscle.
    plantar flexion of foot
  77. If a muscle contracts against a load that it is able to lift, what type of contraction is the muscle demonstrating?
    isotonic contraction
  78. Name one action of the platysma muscle.
    depresses mandible
  79. Name one action of the trapezius muscle.
    extend head
  80. Name one action of the vastus medialis muscle.
    extends knee
  81. Name one origin of the zygomaticus major muscle
    zygomatic bone
  82. Name one origin of the platysma muscle.
    fascia of chest
  83. Name one insertion of the zygomaticus minor muscle.
    corner of mouth
  84. Name one action of the gracilis muscle.
    adducts thigh
  85. Name one insertion of the supraspinatus muscle.
    greater tubercle of humerus
  86. What do we call muscles that immobilize the origin of another muscle so that all of the tension is exerted at the insertion?
    fixators
  87. Name one origin of the semimembranosus muscle.
    ishial tuberosity
  88. Name one origin of the triceps brachii muscle.
    humerus
  89. What do we call muscles that aid the action of other muscles by reducing undesirable or unnecessary movement?
    synergists
  90. Name one insertion of the platysma muscle.
    mandible
  91. Name one insertion of the tibialis anterior muscle.
    metatarsal 1
  92. Name one origin of the rectus femoris muscle.
    acetabulum
  93. name one action of the semimembranosus muscle
    knee flexion
  94. name one insertion of the buccinator muscle
    orbicularis oris
  95. name one insertion of the deltoid muscle
    deltoid tuberosity of humerus
  96. name one origin of the deltoid muscle
    spine of scapula
  97. name one origin of the gastrocnemius muscle
    femur
  98. name one action of the orbicularis oculi muscle
    closes eyelids
  99. name one insertion of the rectus femoris
    patella

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