Homeostasis 2 Flashcards

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1
Q

What are homeostasis mechanisms represented by?

A

Reflexes

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2
Q

What does homeostasis of water affect the concentration of?

A

Everything else in the body.

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3
Q

Which processes are regulated in order to maintain water balance?

A

Thirst mechanism, urinary losses, sweating.

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4
Q

Where is water in our bodies?

A

28L intracellular fluid, 11L interstitial fluid, 3L plasma.

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5
Q

What can cross the blood vessel capillary wall?

A

Anything can diffuse apart from plasma proteins.

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6
Q

What can cross the cell membrane without the use of channels?

A

Water, small uncharged ions.

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7
Q

Define plasma.

A

Fluid component of blood and continuously moves through blood vessels by pumping action of the heart.

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8
Q

What body fluid cavities can not be measured directly?

A

Intracellular fluid and interstitial fluid.

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9
Q

What happens if homeostasis does not operate effectively?

A

Potassium concentration in the ECF increases outwith normal range causing disruption of nerve and muscle function.

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