1 / 7

Excretion of Waste

The Urinary System. Excretion of Waste. Human Urinary Tract. Human urinary tract diagram. Filtration and removal of metabolic wastes from the blood Urea (nitrogen waste from proteins) Excess Salts Excess Water Excess Glucose (sugar) Excess Minerals (Na + , K + , Ca 2+ ).

mgrubbs
Download Presentation

Excretion of Waste

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Urinary System Excretion of Waste

  2. Human Urinary Tract Human urinary tract diagram

  3. Filtration and removal of metabolic wastes from the blood • Urea (nitrogen waste from proteins) • Excess Salts • Excess Water • Excess Glucose (sugar) • Excess Minerals (Na+, K+, Ca2+) The Kidney’s job:

  4. Function of the Kidney- filtration, secretion, reabsorption, excretion kidney animation

  5. Nephron- the functional unit of the kidney. Each kidney has about 1.3 million of these little filtration units!Magnified, they look like this:

  6. Filtration: materials from the blood are forced out of the glomerulus into the Bowman’s capsule (“filtrate”). • Reabsorption: some of the substances that left the blood need to be returned, for homeostasis purposes, and so are selectively diffused or actively transported out of the proximal convoluted tubule back into the capillaries • Secretion: final “tweak”. Some more wastes and H+ ions are secreted from the blood into the distal convoluted tubule Formation of Urine:

  7. Human Urinary Tract Human urinary tract diagram

More Related