The physiochemical properties of the cell (filtration, osmosis, diffusion, tonic of the cell Flashcards
Essential for maintaining cellular function and homeostasis.
Physiochemical Properties of the Cell
It is the process by which water and solutes move across a membrane due to hydrostatic pressure.
Filtration
Filtration relies on pressure gradients rather than chemical gradients. For example, in the kidneys, blood pressure forces water, ions, and small molecules out of the blood and into the nephron to form urine.
Mechanism
The movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.
Osmosis
The passive movement of molecules from an area of high concentration to an area of low concentration until equilibrium is reached. It does not require energy input.
Diffusion
Types of Diffusion
Simple Diffusion, Facilitated Diffusion
It refers to the ability of an extracellular solution to affect the volume and pressure within a cell, influencing water movement based on solute
Tonicity of the Cell
The solute concentration is equal inside and outside the cell, resulting in no net movement of water.
Isotonic Solution
The extracellular fluid has a lower solute concentration than the cell’s interior, causing water to enter the cell, which may lead to swelling or bursting (lysis).
Hypotonic solution
The extracellular fluid has a higher solute concentration than inside the cell, causing water to exit the cell, leading to cell shrinkage (crenation).
Hypertonic Solution