Human Body

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Across
  1. 3. organ that filters toxins
  2. 4. organs that create and secrete hormones
  3. 5. muscles that can be controlled voluntarily
  4. 8. Throat
  5. 10. protective covering of body
  6. 13. semiliquid mass of partially digested food in stomach to intestines
  7. 15. filters wastes (urea)
  8. 16. smallest blood vessels, connect to cells and larger vessels
  9. 17. muscle contractions that move food along
  10. 21. substance your immune system reacts against
  11. 22. connects muscle to bone
  12. 23. resistant to disease
  13. 25. muscle that contracts and relaxes slowly (involuntary)
  14. 27. junction between 2 neurons
  15. 29. tiny sacs holding air in lungs
  16. 30. digestion breaking down complex molecules (fats, proteins, etc)
  17. 32. intestine that extracts excess moisture from food residue
  18. 33. pair of organs helps you breathe
  19. 36. pigments in skin, scales & feathers
  20. 37. automatic instinctive response to stimulus
  21. 39. voice box
  22. 40. found at ends of bones, reduces friction
  23. 41. protein made by your body to fight infection
  24. 43. muscles that work without conscious control
Down
  1. 1. small branches of bronchi
  2. 2. 2 main branches off trachea
  3. 6. windpipe
  4. 7. fingerlike bumps in small intestine, increases surface area for absorption
  5. 9. maintaining metabolic equilibrium
  6. 10. intestine where most absorption of nutrients occurs
  7. 11. nerve cell
  8. 12. muscle that helps you breathe
  9. 14. major part of central nervous system
  10. 18. part of central nervous system conducts sensory & motor impulses
  11. 19. in cavity of bones, makes blood cells
  12. 20. place where two bones meet
  13. 24. takes blood to the heart
  14. 26. hollow storage organ (urine)
  15. 27. muscles attached to bones (voluntary)
  16. 28. connects bone to bone
  17. 30. muscles found only in the heart
  18. 31. in the phase after fertilization
  19. 34. digestion including the physical breaking down of food
  20. 35. secreted from an endocrine gland
  21. 38. takes blood away from heart
  22. 42. fertilized egg