13 Excretion Flashcards
1
Q
Where is CO2 excreted through?
A
the lungs
2
Q
What do the kidneys excrete?
A
Urea, excess water and ions
3
Q
Role of the glomerulus
A
filtration from the blood of water, glucose, urea and ions
4
Q
role of nephron
A
the reabsorption of all the glucose, some of the ions and most of the water back into the blood
5
Q
the formation of urine contains
A
urea, excess water and excess ions
6
Q
role of liver (amino acid specifically)
A
assimilation of amino acids by converting them into proteins, e.g. fibrinogen (blood clotting)
7
Q
how is urea formed
A
In the liver form excess amino acids
8
Q
Deamination
A
the removal of the nitrogen containing part of amino acids to form urea
9
Q
importance of excretion (Urea and CO2)
A
- urea is toxic in higher concentrations
- co2 forms an acidic solution which lowers the pH of cells, reducing the activity of enzymes which is important in controlling the rate of metabolic reactions
