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