Excretion - Basics Flashcards
1
Q
what is excretion?
A
the removal of metabolic wastes form the body
2
Q
what is metabolic waste?
A
the products produced as a result of metabolic reactions
3
Q
what are some examples of metabolic wastes?
A
- CO2 from cellular respiration
- urea
- excess water
- excess body heat
- excess salts and ions
4
Q
where does urea come from?
A
urea comes from the deamination (breakdown) of proteins
5
Q
what are the excretory organs?
A
- lungs
- skin
- kidneys
6
Q
what do the lungs excrete?
A
carbon dioxide
7
Q
what does the skin excrete?
A
- sweat
- heat
- water
- salts
8
Q
what do the kidneys excrete?
A
- urea
- excess water
- toxins
