To match each system with its function, here are the relevant pairs:
- Circulatory system - Transports blood, nutrients, gases, and waste throughout the body.
- Digestive system - Breaks down food, absorbs nutrients, and eliminates waste.
- Respiratory system - Responsible for gas exchange, bringing oxygen into the body and removing carbon dioxide.
- Nervous system - Controls and coordinates body activities by transmitting signals between different parts of the body.
- Endocrine system - Regulates bodily functions through hormones and maintains homeostasis.
You can use this information to fill in the inputs accordingly.