Question

how do i study for diffusion and osmosis in Anatomy and physiology

Answer 1

Osmosis is defined as the movement of solvent molecules from a less concentrated area to a high concentrated area through a semi permeable membrane. Eg. When RBC rich in proteins and salt placed in water it swells.There are 3 types of osmotic solutions:

1.Isotonic-here water molecules move in and out in an equal rate.

2.Hypotonic-Rate of movement of water to inside is more causing it to swell.

3.Hypertonic -Here rate of water movement to outside is more causing the cell to shrink.

Diffusion is the net movement of any substance from its high concentrated area to it's low concentrated area. It depends on concentration gradient.

3 types of diffusion are:

1.simple diffusion

2.osmosis

3.facilitated diffusion

Simple diffusion is the movement of particles from a high concentrated area to a low concentrated area.

Facilitated diffusion is the passive transport of molecules across a biological membrane through transmembrane proteins. Eg.movement of glucose through cell membrane.