Muscle and Skin

  1. 4 functions of the skin:
    • protects
    • regulates internal temp.
    • contains sensory organs
    • produces vitamin D
  2. How does the integumentary system react to cold?
    • blood vessels constrict
    • vessels move away from the surface
    • hair stands up on end to trap heat
    • shiver, muscles contract
  3. How does the integumentary system react to heat?
    • sweat evaporates and cools body
    • vessels dilate and move to the surface to release heat
    • hair lays down
  4. Which is outer layer?
  5. Which contains pores?
  6. Who contains the hair follicles, blood vessels, and nerve endings?
  7. Which contain pain and temp. nerves?
  8. How does exposure to UV rays affect melanin production and skin color?
    When your skin is exposed to UV rays, melanin, a pigment that absorbs and breaks down the UV rays you are exposed to, this increases the melanin production therefore darkening your skin color.
  9. Movement is produced when...
    muscle pulls on bone.
  10. zygomaticus
    raises lips
  11. frontalis
    wrinkles forehead; raises eyebrows
  12. obicularis oculi
    close eyelid
  13. obicularis oris
    pucker lips
  14. sternocleidomastoid
    alone: move neck side to side; together: flex neck
  15. deltoid
    abducts upper arm
  16. pectoralis major
    adducts upper arm
  17. biceps brachii
    flex forearm
  18. triceps brachii
    extend forearm
  19. serratus anterior
    protracts scapula
  20. rectus abdominus
    flex trunk
  21. trapezius
    elevate shoulder; extend neck
  22. latissimus dorsi
    brings shoulder down and back to body
  23. quadriceps
    flex hip; extend lower leg
  24. hamstring
    extend hip; flex lower leg
  25. sartorious
    flex lower leg; flex thigh; laterally rotate thigh
  26. tibialis anterior
    dorsiflex foot
  27. gastrocnemius
    planterflex foot
  28. gludius maximus
    hyperextend thigh; laterally rotate thigh
  29. gludius medius
    abducts thigh; medially rotate thigh
  30. adductor thigh
    adducts thigh
  31. 3 types of muscle:
    • smooth
    • cardiac
    • skeletal
  32. Which type is found in the heart?
  33. Which type lines internal organs and vessels?
  34. Which type is also known as striated muscle?
  35. Which type attaches to bone?
  36. Which muscles are involuntary?
    • cardiac
    • smooth
  37. Which muscle is voluntary?
  38. Which muscle fatigues easily?
  39. Which muscle squeezes things through by peristalsis?
  40. What are the two muscle filaments?
    • actin- thinner
    • myosin- thicker
  41. As a muscle contracts, which filament moves and which will remain stationary?
    • myosin- does not move
    • actin- moves
  42. What is lactic acid and when is it produced?
    Lactic acid is a product of anaerobic respiration that occurs when the body is short on oxygen; it builds up in the muscles when you excerise and don't take in enough oxygen, causes pain and cramping.
  43. How does exercise increase muscle strength?
    exercise rips muscle fibers, they rebuild themselves thicker and stronger.
  44. What connects muscle to bone?
  45. What connects bone to bone?
Card Set
Muscle and Skin
Muscle and Skin