Across
- 2. the first thing that reacts by making a signal
- 4. a type of system that receives a signal from the nerves to move your body
- 5. sends messages from brian to nerves
- 7. a system that receives a signal from the brain and nerves to make sure you are breathing
- 8. send messages to different systems like the muscular, respiratory, and digestive system
Down
- 1. a system that can send a signal to the brain through the nerves when you are hungry
- 3. a system that includes, the brain, spinal cord, and nerves
- 6. a system that receives a signal to filter your urine, and let you pee.