A&P Chapter 10

  1. The body contains more than ____ skeletal muscles
  2. ______ surrounds an individual muscle fiber
  3. _____ surrounds a fascicle (bundle) of muscle fibers
  4. ______ Surrounds entire muscle organ
  5. Pennate Muscles are said to be
    • "featherlike"
    • Ex: Flexor Pollicus Longus, Rectus Femoris, & Deltoid
  6. Parallel muscles can
    • vary in length, but long "straplike"
    • Ex. Rectis abdominis & Sartorius
  7. Convergent Muscles have
    • fasicles radiating out from small to wider point of attachment
    • Ex. Pectoralis Major
  8. Fusiform muscles have
    • fiscicles that may be close to parallel in the center, but converge to a tendon at one or both ends
    • Ex. Brachioradialis
  9. Spiral Muscle have
    • fibers that twist between points of attachment
    • Ex. Latissimus dorsi
  10. Curcular muscles often
    • circle body tubes or openings
    • Ex. Orbicularis oris (mouth muscle)
  11. Point of attachemtn that moves when the muscle contracts
  12. Point of attachemnt that does not move when muscle contracts
    • Origin
    • (Therefore the origin bone is the more stationary of the two bones at a joint)
  13. Prime mover is used to describe
    a muscle that directly preforms a specific movement (main muscle that contracts directly)
  14. Agonist can be
    ANY mover that directly contributes to the same action as the prime mover
  15. Antagonists are
    muscles that when contracting, directly oppose prome movers or agonists
  16. Synergists are
    muscles that contract at the same time as the prime mover
  17. A form of a synergists is a Fixator muscle generally
    functions as joint stabilizers
  18. Lever System:
    • 1. Lever (Bone)
    • 2. (F)ulcrum (Joint)
    • 3. (L)oad (resistance that is moved)
    • 4. (P)ull (muscle contraction)
  19. What muscles are involved in posture
    All muscles contribute to standing upright
  20. Lina Alba
    white line
  21. 3rd Class Lever
    Pull between the fulcrum and the load
  22. Synovial joint of the shoulder move in
    all planes of the body, Transverse, Sagital, Frontal
  23. Neck
  24. Back of Neck
  25. Chest
    Pectoralis Major
  26. Abdominal Wall
    External Oblique
  27. Shoulder Muslce
  28. Upper part of arm (front)
    Biceps Brachii
  29. Upper part of arm (back)
    Triceps Brachii
  30. Buttocks
    Gluteus maximus, and gluteus medius
  31. Anterior Thigh
    Quadriceps Femoris
  32. Posterior Thigh
    Hamstring group
  33. Calf
  34. Below calf
  35. Front of forehead
  36. Thin back head muscle
    Epicranial aponeurosis
  37. Eye brow muscle
    Corrugator supercilii
  38. Eye Muscle
    Obucularis oculi
  39. Kissing/Sucking muscle
  40. Mouth muscle
    Obicularis oris
  41. Jaw muscle
  42. Back of the head
  43. Temple bone
  44. Obicularis oris has its
    origin in fasha
  45. What three muscles do you use to close your mouth
    Temporalis, Masseter, and Buccinator
  46. What two muscles do you use to open your mouth
    Lateral pterygoid mucle, Medial pterygoid muscle
  47. Muscle that helps you stick out your tounge
    Genioglossus (Genio-chin & glossus-tounge)
  48. External intercostals
    rib forward fibers
  49. Internal intercostals
    ribs backward fibers
  50. Diaphragm
  51. Anal triangle
    supports genital/urinary tract
  52. Outter portion of anus
    External anal sphincter
  53. Floor of pelvic organs
    Levator ani
Card Set
A&P Chapter 10
A&P Chapter 10