Excretory System Flashcards
What the main function of the excretory system.
To remove wastes and maintain water balance.
Through the digestive and respiratory system the human body takes in a lot of things it does not use. What are these products called?
Wastes
There are many ways the body removes wastes,what are two ways the body removes wastes.
Sweat through the skin and carbon dioxide is exhaled out of the lungs.
Some wastes are found in the blood such as a waste that comes from broken down cell parts. What does this kind of waste contain a lot of.
Nitrogen
The liver then changes the nitrogen wastes into a compound called
____________.
Urea
What must blood that contain urea be filtered by?
Kidneys
Kidneys use a complex series of cells,pumps and tubes to filter the blood containing urea. What is what left behind called?
Urine
Urine moves from the kidneys into tubes called ___________ and from there to the bladder.
Ureters
Once enough urine is collected and the bladder is full. Where will a signal be sent to that it needs to be emptied?
The brain
Some people are born with a missing kidney or disease witch can lead to a build up of wastes in the body. How can you keep your body healthy?
By drinking a lot of water.
There are some treatments for kidney problems.
- Medicines and changes to a diet.
- Kidney transplant
- _________________________________________
Dialysis which is a artificial cleaning of the blood.
How does dialysis work?
Tubes carry the patients blood into a machine,drains out the wastes then back to the body.
Earthworms remove wastes through __________ skin.
Wet
Mammals make ____________ which they flush out with water.
Urea
Camels and other desert mammals have powerful kidney so that they can tolerate a great deal of ____________.
Salt
