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Across
  1. 3. Surface layer of skin
  2. 6. Organelles responsible for substance transport
  3. 8. Portion of bone where longitudinal growth occurs
  4. 10. Independent movement of substances down a concentration gradient from high to low; no energy required
  5. 11. Gas needed for life; forms about 20% of atmospheric air
  6. 13. Superior section of pelvic girdle
  7. 16. Voluntary, striated muscle tissue that fatigues
  8. 17. Uppermost part of sternum
  9. 20. A roof is an example of an altitude ___________
  10. 22. Energy producing organelle
  11. 24. Toward the front of the body
  12. 25. “out of a cell” ; method for bulk expulsion of substances
  13. 28. The elbow or the knee
  14. 30. Primary function of flat bones
  15. 31. A change that reduces the strength of the electrical gradient
  16. 33. Living things maintain organization through these
  17. 34. Water participates in chemical reactions by being created or __________
  18. 35. Hairlike projections; coordinate to move substances
  19. 36. Cell distribution center
  20. 38. Positively charged ion
  21. 39. Muscle fibers optimized for aerobic metabolism
  22. 41. Type of tissue that covers body surfaces, lines cavities, & forms glands
  23. 44. A characteristic of living things; relates to the ability to adjust
  24. 45. Fastest method of generating ATP from nutrients
  25. 48. Changing the number of neutrons results in this
  26. 49. The internal oblique is _________ to the rectus abdominus
  27. 50. Bones of the wrist
  28. 51. Unnatural or premature cell death
  29. 52. Another term for the electrical gradient; key player in electrical signaling
  30. 55. The building blocks of everything
  31. 57. Angular movement of a bone toward the midline of the body
  32. 59. A neuron can have many dendrites but only one of this
  33. 60. Number of cervical vertebra
  34. 62. In standard anatomical position, this forearm bone is lateral
  35. 64. The most basic function of skin is to provide this between the internal and external environment
  36. 67. Most powerful type of muscle contraction
  37. 68. Technical term for cell division
  38. 69. The flexor carpi radialis is _________ to the biceps brachii
  39. 70. The fundamental building blocks of all life
  40. 71. The external oblique is ___________ to the rectus abdominus
Down
  1. 1. Tough, fibrous membrane the covers most of long bone
  2. 2. Cell membrane of a muscle cell
  3. 4. In yoga, the downward dog position requires primarily this type of muscle contraction
  4. 5. Pigment responsible for variations in skin color
  5. 7. An organ is made of these structures
  6. 9. Medial bone of lower leg; weight-bearing
  7. 12. Neutrons in potassium atom
  8. 14. Chemical signal
  9. 15. Do not change length during skeletal muscle contraction
  10. 16. Fixed joint allowing no movement; sutures are an example
  11. 18. Epidermal stem cells
  12. 19. Bone building cells
  13. 21. Neurotransmitter for skeletal muscle contraction
  14. 23. Water hating
  15. 26. Joint with space; most joints in the limbs are this type
  16. 27. Most bones form by this process
  17. 29. Substance providing about 10 seconds of energy
  18. 32. Energy currency
  19. 37. Myosin heads bind this in skeletal muscle contraction
  20. 40. A 20-year-old male with a 30% burn has roughly a _____ percent chance of dying from the injury
  21. 42. Electrons in outer shell of sodium atom
  22. 43. Primary mechanism by which we maintain homeostasis
  23. 46. Type of callus that forms first in the healing of a fractured bone
  24. 47. Angular movement that decreases joint angle
  25. 53. Homeostasis refers to the body’s tendency to maintain its _________ state
  26. 54. The cell membrane is composed of 2 _________ layers
  27. 56. Covalent bonds form when atoms _______ electrons
  28. 58. Type of reaction involving breaking substances down into simpler forms
  29. 61. Substance that cannot be reduced to a simpler substance by normal forces
  30. 63. The rectus femoris is ____________ to the soleus
  31. 65. Mimics the effect of endogenous ligand by binding to a receptor
  32. 66. The goal of anatomy is to understand the _______ of the body
  33. 72. Protons in an oxygen atom