Homeostasis 2 Flashcards
What are homeostasis mechanisms represented by?
Reflexes
What does homeostasis of water affect the concentration of?
Everything else in the body.
Which processes are regulated in order to maintain water balance?
Thirst mechanism, urinary losses, sweating.
Where is water in our bodies?
28L intracellular fluid, 11L interstitial fluid, 3L plasma.
What can cross the blood vessel capillary wall?
Anything can diffuse apart from plasma proteins.
What can cross the cell membrane without the use of channels?
Water, small uncharged ions.
Define plasma.
Fluid component of blood and continuously moves through blood vessels by pumping action of the heart.
What body fluid cavities can not be measured directly?
Intracellular fluid and interstitial fluid.
What happens if homeostasis does not operate effectively?
Potassium concentration in the ECF increases outwith normal range causing disruption of nerve and muscle function.
