Excretion as homeostatic control. Flashcards
1
Q
Define excretion
A
The removal of metabolic waste from the body
2
Q
List 3 products that are excreted
A
- Carbon dioxide in respiration
- Nitrogen containing compounds (urea)
- Bile pigments in faeces
3
Q
List the excretory organs
A
- Liver
- Skin
- Kidneys
- Lungs
4
Q
What is the importance of excretion?
A
To remove metabolic products that could build up and become toxic.
5
Q
What is most carbon dioxide in the body transported as?
A
Hydrogencarbonate ions in the blood
6
Q
Can the body store excess amino acids?
A
NO, they must be deaminated in the liver
7
Q
What is deamination?
A
The process of the liver removing the amine group from excess amino acids which creates ammonia (+keto acid)
