null
US
Sign In
Sign Up for Free
Sign Up
We have detected that Javascript is not enabled in your browser. The dynamic nature of our site means that Javascript must be enabled to function properly. Please read our
terms and conditions
for more information.
Next up
Copy and Edit
You need to log in to complete this action!
Register for Free
92338
Excretory System
Description
Biology (4. Gaseous exchange and Transport) Mind Map on Excretory System, created by Kass on 16/05/2013.
No tags specified
4. gaseous exchange and transport
biology
biology
4. gaseous exchange and transport
Mind Map by
Kass
, updated more than 1 year ago
More
Less
Created by
Kass
almost 12 years ago
84
0
0
Resource summary
Excretory System
What?
Lungs- CO2
Kidney- Urea
Skin- urea
Liver- bile salts
Why?
To expel wastes that have been made by cells as a by-product of metabolism. If waste accumulates then it becomes toxic
How?
Nitrogenous waste, water and other substances combine to make urine
The greater the toxicity of the waste, the more water required to dilute it for excretion
Where
Lungs- removes CO2 from blood
Kidney- removes urea from blood
Skin- removes quantities of urea from blood
Liver- removes pigment (haemoglobin) from warn out red blood cells
http://www.youtube.com/watch?v=TZMJeZL-BVg
Show full summary
Hide full summary
Want to create your own
Mind Maps
for
free
with GoConqr?
Learn more
.
Similar
GCSE Biology AQA
isabellabeaumont
AQA Biology 8.1 structure of DNA
Charlotte Hewson
GCSE Biology B2 (OCR)
Usman Rauf
Biology Unit 2 - DNA, meiosis, mitosis, cell cycle
DauntlessAlpha
Function and Structure of DNA
Elena Cade
Cell Transport
Elena Cade
Biological Molecules Definitions
siobhan.quirk
Cells And Cell Techniques - Flashcards (AQA AS-Level Biology)
Henry Kitchen
Cell Structure
megan.radcliffe16
Exchange surfaces and breathing
megan.radcliffe16
AQA Biology 12.1 cellular organisation
Charlotte Hewson
Browse Library