189k views
0 votes
How does the circulatory system work

User Azurefrog
by
4.3k points

2 Answers

5 votes
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
User Siuying
by
4.9k points
2 votes

Answer:

The circulatory system is made up of your veins. They carry blood to your heart and away from it. The blood going through your body carries oxygen, nutrients, and hormones, and removes wastes like carbon dioxide.

Step-by-step explanation:

User Tony Eastwood
by
4.0k points