excretory system

The systems that excrete wastes from the body. For example, the system of organs that regulates the amount of water in the body and filters and eliminates from the blood the wastes produced by metabolism . The principal organs of the excretory system are the kidneys , ureters , urethra , and urinary bladder .

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Example Sentences

For the development of the segmental organs the reader is referred to the chapter on the excretory system.

And the development of the excretory system points to an ancestor far more primitive than even the fish.

The excretory system has more work to perform and reaches a rather higher development.

In the general account of the development we have already called attention to the earliest stages of the excretory system.

The latest stage of the excretory system which we have studied is in a young Fish of about 11 centims.

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