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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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Porifera

Porifera

Excretion is regulated by

diffusion


Chordata two major organs

ChordataTwo Major Organs

Kidney

Liver


Kidneys

All Classes!

(Fishes, Amphibians, Reptiles, Aves, Mammals)


Kidneys

Functions:

-excrete waste products

-regulate water and salt balance

Kidneys do this by filtering blood and producing urine.

Excretion


Kidneys

Kidney’s filter your blood continuously.

They filter your entire blood supply (5 liters) approximately

400

times a day!


Liver

1 Class

(Mammals)

Functions:

-detoxify the blood

The liver does this with enzymes that chemically alter many substances, such as alcohol, before the blood reaches other body parts.



Kidneys

and a liver

All excretory system lack



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