body systems - kathy

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Across
  1. 4. Ability to respond to a stimulus as a nerve impluse
  2. 7. Organ located on left side, back of upper part of stomach
  3. 9. Muscle fibers are stimulated by nerves
  4. 11. Lies directly behind nasal cavities
  5. 13. Outermost layer of the skin
  6. 15. Turning a body part around its own axis
  7. 20. Tricuspid, pulmonary, mitral, and aortic are all...
  8. 21. Basic unit of structure
  9. 22. Spaces within body that contain vital organs
  10. 24. Groups of similar cells join together
  11. 26. Moving a body part away from the midline
  12. 27. Covers outside of the heart
  13. 28. Made of elastic and fibrous connective tissue and adipose tissue
  14. 30. Filter potential pathogens before entering GI tracts or lungs
  15. 31. Cavities in skull around nasal area
  16. 32. "True skin"
  17. 34. Carry blood back to the heart
Down
  1. 1. Mass of lymph tissue located in center of upper chest
  2. 2. Made of eight bones (frontal, 2 parietal, 2 temporal, occipital, ethmoid, sphenoid)
  3. 3. Tiny hairlike structures in nasal cavity
  4. 5. Contract automatically
  5. 6. Covers all body surfaces except the palms of the hands and soles of the feet
  6. 8. A bacterium, virus, parasite or fungus that can cause disease within the body
  7. 10. Thin, watery fluid
  8. 12. Forms the extremities of the body
  9. 14. Muscular wall
  10. 16. Multiple tissues joined together
  11. 17. Protects the fingers and toes
  12. 18. Allows the muscle to return to its original shape after contracting or stretching
  13. 19. Muscular, hollow organ called body's "pump"
  14. 23. Voice box
  15. 25. Leaflike structure that closes the opening into the larynx during swallowing
  16. 29. Organs and other body parts joined together
  17. 33. Moving a joint in a circle
  18. 34. You contract when you want to move