Circulatory and Respiratory Systems

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Across
  1. 1. a muscular organ that pumps blood through your body
  2. 4. your largest organ that covers and protects your internal organs
  3. 5. system made up of a group of organs
  4. 7. organs that contract, or shorten, and relax, or lengthen to move bones
  5. 8. the main organs of the respiratory system
Down
  1. 2. groups of cells of the same kind that have a specific function
  2. 3. a muscle located below the lungs that causes air to flow in and out of your lungs
  3. 5. body parts that perform specific functions
  4. 6. system the bones in the human body that interact to move, protect the body, and give it shape