Understanding the Excretory System and Waste Removal Process
Discover the functions of the excretory system, including kidney filtration, waste removal, and urine production. Learn about the role of nephrons in filtering blood, the types of waste removed, and the organs involved in urine excretion. Explore the importance of kidney function and the process of dialysis if kidneys don't work. Overall, the excretory system plays a vital role in maintaining homeostasis by eliminating waste from the body.
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Presentation Transcript
Function removal of waste from the body Blood enters the kidney and is cleaned and filtered, then the urea is sent to the bladder to be removed from the body via the urethra.
What waste? Urea (a toxic substance) Nitrogen containing waste made by the body when we digest protein. excess salts And excess water This forms Urine
What does the filtering? Nephrons = the blood-filtering units of the kidney Nephron
Where does the waste go? URINE REMOVAL FROM THE BODY: Kidneys Ureter Bladder Urethra released from body
What if your kidneys dont work? Dialysis = Blood is removed from the body, cleaned by a machine & then returned to the body
The Excretory System: Function: The basic function of the human excretory system is the removal of waste from the cells and body. The skin excretes excess water and salts in the form of sweat. The lungs excrete carbon dioxide. The kidneys play a major role in excretion and remove waste products from the blood, maintain blood pH and regulate the water content of the blood and, therefore homeostasis. So, the major Organs are: - Kidneys - Skin - Bladder - Lungs
