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