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13. What is the difference between homeotherms and poikilotherms?

14.
(a) Name the conditions under which urine production increases in mammals.

(b) What is meant by diuresis?

(c) What is diabetes insipidus?

(d) Describe how the kidney functions as an osmoregulatory organ.

Sagot :

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Final answer:

Homeotherms maintain constant internal body temperature, while poikilotherms experience temperature variations. Mammals are homeotherms, reptiles are poikilotherms. Factors like water intake and blood pressure can increase urine production in mammals.


Explanation:

Homeotherms maintain a constant internal body temperature, while poikilotherms experience fluctuations in their internal temperature based on environmental conditions. For example, mammals are homeotherms, regulating their body temperature consistently, while reptiles are poikilotherms, adjusting their temperature with the environment.

Conditions under which urine production increases in mammals:

  1. Increased water intake
  2. Consumption of diuretic substances
  3. Higher blood pressure

Dieresis refers to increased urine production by the kidneys, often due to factors like increased fluid intake or certain medications.

Diabetes insipidus is a condition characterized by excessive thirst and large amounts of dilute urine due to the inability of the kidneys to concentrate urine.

The kidneys function as osmoregulatory organs by regulating the balance of water and electrolytes in the body through processes like filtration, reabsorption, and secretion to maintain proper blood osmolality.


Learn more about Difference between homeotherms and poikilotherms, urine production in mammals, dieresis, diabetes insipidus, kidney function as osmoregulatory organ here:

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