Get premium membership and access questions with answers, video lessons as well as revision papers.

Describe the role of the following organs in excretion and homeostasis.the liver, the skin during hot environmental conditions.

      

Describe the role of the following organs in excretion and homeostasis: the liver, the skin during hot environmental conditions.

  

Answers


Belinda

Regulation of blood sugar ; when blood sugar is below normal/90 mg/100 cm3 glucagon ; triggers the conversion of glycogen to glucose in the liver; the glucose is released into the blood stream. When blood sugar is in excess above normal/10 mg/100cm, insulin; causes the liver to convert glucose excess to glycogen ; which is stored. Production of heat energy ; by increasing the rate of metabolic activities; Excretion of bile pigments ; produced due to breakdown of worn out red blood cells; Deamination/removal of amino group of excess amino acids to form urea; and detoxication/poisonous/toxic substances;
Sweat glands excrete urea; excess water; and salts; hence maintaining salt & water balance in the blood. Evaporation of sweat; cools the body due to loss of latent heat of vaporization; when the body temperature rises ; blood vessels in the skin vasolidate; allowing more blood to flow near the skin surface; thus heat is lost to the environment by radiation/convection. The erctor pili mucle relaxes hair flattens ; in a hot environment reducing insulation; hence heat is lost from the body by radiation/convection; to the environment.
adhixbelly answered the question on September 20, 2017 at 13:42


Next: Describe the process of blood clotting in human beings
Previous: Give six reasons that make it necessary for an ECDE teacher to set objectives in a lesson plan for psychomotor activities.

View More Biology Questions and Answers | Return to Questions Index


Learn High School English on YouTube

Related Questions