EXCRETION
¢ Many chemical reactions take place inside cell of
organism in order to keep it alive.
¢ Some products of these reactions are poisonous and
must be removed from your body.
Glucose----respiration----CO2
¢ CO2 carry by blood and removed in lung
Excess amino acids are deaminated in liver to form
glycogen and urea
¢ Urea is removed from tissue by blood
¢ Excrete by kidneys
¢ During feeding, more water and salts are taken in
within food than are needed by the body.
¢ The excess need to be removed
¢ Hormones---need to modified in liver and excrete by
kidneys