Here's how it works:

* Blood: Waste products like carbon dioxide, urea, and excess water are picked up by blood as it circulates through the body.

* Capillaries: These tiny blood vessels in the circulatory system connect with individual cells, allowing for the exchange of substances, including waste.

* Veins: Waste-laden blood travels back to the heart through veins.

* Lungs: The lungs are responsible for removing carbon dioxide from the blood and releasing it into the air we exhale.

* Kidneys: The kidneys filter waste products from the blood, including urea and excess water, and form urine.

* Liver: The liver processes and detoxifies harmful substances in the blood, turning them into less toxic forms that can be excreted.

* Other excretory organs: The skin (sweat glands), digestive system (feces), and lymphatic system (lymph nodes) also play roles in removing waste from the body.

So, the circulatory system, along with other excretory organs, efficiently transports and removes waste products from cells, keeping the body clean and functioning properly.