Homeostasis 2 Flashcards Preview

Science for Medicine > Homeostasis 2 > Flashcards

Flashcards in Homeostasis 2 Deck (9)
Loading flashcards...
1
Q

What are homeostasis mechanisms represented by?

A

Reflexes

2
Q

What does homeostasis of water affect the concentration of?

A

Everything else in the body.

3
Q

Which processes are regulated in order to maintain water balance?

A

Thirst mechanism, urinary losses, sweating.

4
Q

Where is water in our bodies?

A

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

5
Q

What can cross the blood vessel capillary wall?

A

Anything can diffuse apart from plasma proteins.

6
Q

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

A

Water, small uncharged ions.

7
Q

Define plasma.

A

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

8
Q

What body fluid cavities can not be measured directly?

A

Intracellular fluid and interstitial fluid.

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.