Human body systems

1234567
Across
  1. 3. The body system that transports oxygen and nutrients throughout the body,
  2. 4. The body system that differs in males and females,
  3. 5. The body system that waste from the body,
  4. 7. The body system that protects and supports,
Down
  1. 1. The body system that transmits impulses
  2. 2. The body system that helps in the exchange of gas,
  3. 6. The group of cells that works together for a specific job,