Osmoregulation Flashcards

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1
Q

What is osmoregulation?

A

Osmoregulation refers to the process by which the osmotic pressure of fluids is regulated by maintaining the water and salt concentration.

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2
Q

Which organ is responsible for osmoregulation?

A

The kidneys are responsible for osmoregulation in humans

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3
Q

Describe what happens in osmoregulation.

A

During osmoregulation, water, amino acid and glucose absorbed by the kidneys. When the water level in the body is high, it releases a large amount of diluted urine. Whereas when the water level is low, it retains water and produces a low amount of concentrated during. Thus, the kidneys maintain the electrolytic balance of the body.

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4
Q

Describe what happens when the water content of the blood is low.

A

When there is too much salt excretion or sweating, the water content of the blood becomes low. This results in the brain producing more ADH, hence, a higher volume of water is reabsorbed by the kidneys. Therefore, the urine output is low (small volume of concentrated urine).

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5
Q

Describe what happens when the water content of the blood is high.

A

When there is too much water drunk, the water content of the blood becomes high. This results in the brain producing less ADH, hence, a lower volume of water is reabsorbed by the kidneys. Therefore, the urine output is high (large volume of diluted urine). Water content of the blood returns to normal.

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6
Q

What is homeostasis?

A

Homeostasis means to keep the internal environment constant

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