Excretory System. Porifera. Excretion is regulated by. diffusion. Chordata Two Major Organs. Kidney. Liver. Kidneys All Classes! (Fishes, Amphibians, Reptiles, Aves, Mammals). Kidneys. Functions : -excrete waste products -regulate water and salt balance
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Excretion is regulated by
(Fishes, Amphibians, Reptiles, Aves, Mammals)
-excrete waste products
-regulate water and salt balance
Kidneys do this by filtering blood and producing urine.
Kidney’s filter your blood continuously.
They filter your entire blood supply (5 liters) approximately
times a day!
-detoxify the blood
The liver does this with enzymes that chemically alter many substances, such as alcohol, before the blood reaches other body parts.
and a liver
All excretory system lack