Functions of body systems

12345
Across
  1. 3. The system that helps with breathing and gas exchange
  2. 4. The system that processes and absorbs nutrients from food (8 letters)
  3. 5. The system that provides support and protects internal organs (8 letters)
Down
  1. 1. The system that allows movement and maintains posture
  2. 2. The system responsible for sending electrical signals to control body functions(7 letters)