Accessory Excretory Organs Lung Skin

Accessory Excretory Organs

Lung

Carbon dioxide is a catabolic waste product formed due to oxidation of food releasing energy. It is carried by the blood to the lungs. During expiration this carbon dioxide along with a small quantity of water vapour is expelled out of the lungs.d by the blood to the lungs. During expiration this carbon dioxide along with a small quantity of water vapour is expelled out of the lungs.

Skin

The skin of aquatic animals is permeable and excretory wastes pass out by diffusion. In terrestrial animals, the skin is less permeable and excretory products pass out only through ducts and pores. Human skin has two kinds of glands that perform the function of excretion.

Vertical Section of the Skin