Body Systems

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Across
  1. 1. Made up of the body's hormones and releases them into the bloodstream.
  2. 4. Relating to or involving the heart and blood vessels.
  3. 6. Also known as the genital system, made up of organs involved in sexual reproduction.
  4. 8. Air enters the _________ system through the nose and mouth.
Down
  1. 2. The brain, spinal cord, and a complex network of nerves.
  2. 3. System of organs that includes the heart, blood vessels, and blood that is circulated throughout the body.
  3. 5. Body's central framework, bones and connective tissue.
  4. 7. Consists of the gastrointestinal tract, breakdown of food into smaller components.