excretory system
![Picture](/uploads/1/7/9/4/17948919/8146503.jpg?307)
The primary organs of excretion are the lungs, kidneys, and skin. Waste gases
are carried by blood traveling through the veins to the lungs where respiration
takes place. Dead cells and sweat are removed from the body through the skin.
This website is useful in understanding this system: http://www.biology4kids.com/files/systems_excretory.html
are carried by blood traveling through the veins to the lungs where respiration
takes place. Dead cells and sweat are removed from the body through the skin.
This website is useful in understanding this system: http://www.biology4kids.com/files/systems_excretory.html