Levels of Structural Organization of the Human Body

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Across
  1. 2. this system returns fluid to blood and defends against pathogens
  2. 3. this level of organization is where a variety of molecules combine to form the fluid and organelles of the body cell
  3. 7. this system is made of hair, skin, and nails
  4. 8. this level of organization is where two or more organs work closely together to perform the functions of a body system
  5. 10. this system is made of cartilage, bones, and joints
  6. 12. this system secretes hormones and regulates bodily processes
  7. 15. this level of organization is where two or more different tissues combine to form an organ
  8. 17. this system is made of skeletal muscles and tendons
  9. 19. this system includes the stomach, liver, gall bladder, large intestine, and small intestine
  10. 20. this reproductive system includes the epididymis and testes
  11. 21. this reproductive system includes the mammary glands, ovaries, and uterus
Down
  1. 1. this system delivers oxygen and nutrients to tissues and equalizes temperature in the body
  2. 4. this system includes the nasal passage, trachea, and lungs
  3. 5. this level of organization is where many organ systems work together to perform the functions of an independent organism
  4. 6. this level of organization is where atoms bond to form molecules
  5. 9. two or more atoms combine to form one of these, water is an example
  6. 11. all matter in the universe is composed of one or more unique pure substances called these, like hydrogen and oxygen
  7. 13. this system is made of the brain, spinal cord, and peripheral nerves
  8. 14. atoms are made up of subatomic particles including electrons, neutrons, and these
  9. 16. this system controls water balance in the body and removes waste from blood and excretes them
  10. 18. this level of organization is where a community of similar cells form a body tissue