- The circulatory system carries food from the digestive systems to the whole body
- Food contains nutrients for living things
- Therefore, the circulatory system carries nutrients from the digestive systems to the whole body

- Veins carry blood from the body to the heart
- Arteries carry blood from the heart to the body
- Hence, veins and arteries carry blood throughtout the body

- Veins and arteries carry blood throughtout the body
- The circulatory system transports blood throughout the body
- Therefore, veins / arteries are a part of the circulatory system

- The circulatory system carries nutrients from the digestive systems to the whole body
- Veins / arteries are a part of the circulatory system
- Therefore, arteries / veins transport nutrients to the whole body

Therefore, arteries / veins transport nutrients to the whole body
Question
Arteries and veins are two important parts of the circulatory system. What is the relationship between arteries and veins?

Context
- Veins carry blood from the body to the heart 
- Arteries carry blood from the heart to the body 
- The circulatory system transports blood throughout the body 
- The circulatory system carries food from the digestive systems to the whole body 
- Food contains nutrients for living things