Describe the role of the liver in homeostasis in the human body

K.C.S.E Biology Q & A - MODEL 2009PP2QN08

Describe the role of the liver in homeostasis in the human body

answers

• ​Regulation of blood glucose
• The normal amount of glucose in the blood is 90 mg/ 1000m3 increase in blood sugar level is detected by cell of the (batacelss) pancreases, which secrete insulin; insulin stimulates  the liver to convert excess  glucose to glucogen. Further excess glucose is converted to fats. Excess glucose is also oxidized to energy  ( carbon iv) oxide & water/ respiration.
• Decrease in blood sugar level below the normal level is detected by the ( alphacells) by the pancreases. Which secretes glucogen that stimulates the liver, to convert glucogen to glucose, fats/ amino acids are converted to glucose, and there is reduced oxidation of glucose until the normal level of blood sugar is attained.
• Deamination / excess amino acids are deaminated (removal) of amino acid group, the amino group is  converted to ammonia which  combines with carbon (iv) oxide to form urea that is excreted through the kidney, urea is excreted through the skin as sweat.
• Detoxification/ poisonous substances are converted to less harmful compounds.
• Thermoregulation/ maintenance of body temperature heat is generated ( in the liver) by  chemicals activities, the heat is distributed
• NH2 + H →NH3
• 2HH3 + Co2 →Co (NH2)2 + H2O
• Ammonia urea