What are three examples of the circulatory system working with another system in your body?

Answer 1

Three examples would be:

-digestive system, where nutrients enter the bloodstream

-endocrine system, where hormones enter the bloodstream

-immune system, where blood, organs, tissues, cells, and cell products work together to respond to dangerous organisms that enter the body.

(taken directly from http://www.factmonster.com/ipka/A0774536.html)

Answer 2

The nervous system and the circulatory system work together in that the brain sends signals to the heart that cause it to pump. The circulatory system works with the excretory system because waste materials are transported by blood to the organs of the excretory system. The respiratory system is intertwined with the circulatory system, as the respiratory system provides oxygen for the red blood cells.