Homeostasis 1

12 cards·by sarah

Homeostasis

steady-state physiological condition of the body

Ideal condition for cells with cell walls. Why

Hypotonic Environment. Cell membrane pushes against cell wall

Ideal condition for cell w/o cell wall. Why

Isotonic environment. Nothing happens

What happens in hypertonic environment

Cell wall has plasmolysis. No cell wall will shrivel up

Hypotonic for no cell wall

cell will swell and burst

What are the main ions in regulating homeostasis

(K+, Na+, Cl-), Mg+2, Ca+2

What environment are osmoregulators

Terrestrial and Fresh Water and digestive tract organism

What environments are osmoconformers

Marine and inside organism(blood)

Terrestrial

Water constantly trying to exit the body

Marine

solute levels in environment are close enough (except fish)

Fresh Water

less solute in environment, so water tries to go into body

Organism

Weak osmoregulator