Osmotic pressure

There are three types of osmosis hypotonic, hypertonic, and isotonic. These are the effects of different solutions on blood cells. This picture is of the osmotic pressures on blood cells.

Starling forces consist of hydrostatic pressure and osmotic (oncotic) pressure. Hydrostatic pressure is the pressure of the fluid within the blood vessel, while osmotic pressure is the “sucking” pressure drawing water toward solutes. Oncotic pressure is osmotic pressure due to proteins. Hydrostatic pressure forces fluid out at the arteriolar end of a capillary bed; oncotic pressure draws it back in at the venule end. Prevents edema (buildup of interstitial fluid from hydrostatic pressure).

Osmosis is the diffusion of water molecules across a selectively permeable membrane. Molecules move to a higher solute concentration. The osmotic pressure is the minimum pressure required to maintain an equilibrium that doesn't have any net movement of solvent.

The movement of water molecules through a semi permeable membrane from the region of higher water concentration to the region of le...

An example of osmosis: water passing through a semi-permeable membrane to create an isotonic environment

1. The pancreas - functions as exocrine + endocrine gland. - has 2 groups of cell in the pancreas. - α & β-cells in the islet of Langerhans play (major role in blood glucose concdntration). - α-cells - secrete glucagons - β-cells - secrete insulin into blood capillaries. α & β-cells in the islet of Langerhans 2. Blood glucose level rises↑à due to carbohydrate breakdown. 3. Insulin + glucagons have opposite effects. 4. Insulin: - secreted by β-cells (when glucose↑ level increases)…

Learn about osmotic pressure in science. Get the definition, osmotic pressure formula, and examples in daily life.

Osmotic Pressure: The pressure that must be applied to a solution to prevent osmotic movement across a semipermeable membrane.