Do you find any relationship between circulatory system and excretory system?
What are they ?
**A.**1) Circulatory system delivers oxygen, nutrients, water, hormones and other essential materials to each cell of the body.
2) And it also transports all the carbon dioxide and other waste products of the cells to the lungs to be expired or to the kidneys to be excreted.
3) The excretory system is closely related to the circulatory system by virtue of the process of cleaning the blood of waste, removing excess fluids and generally keeping other fluids in balance.
4) Excretory system releases hormones to elevate blood pressure and accelerate red
blood cells production. ■
5) Kidney stimulates the red blood cell production by erythropoisis and regulates blood pressure with the secretion of renin.