anatomy. intro

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Across
  1. 2. one of many tissues in the body that can tighten and relax to produce movement
  2. 5. a pair of small organs in the body that take away waste matter from the blood to produce urine
  3. 7. the smallest basic unit of a plant or animal
  4. 9. the process of breathing
Down
  1. 1. a group of connected cells in an animal or plant that are similar to each other, have the same purpose, and form the stated part of the animal or plant
  2. 3. the frame of bones supporting a human body
  3. 4. the movement of blood around the body
  4. 6. the process of adding oxygen to something
  5. 8. a structure in the heart and the veins that controls the flow of blood