Non-dimensional numbers
The ratio of inertial forces to viscous forces
What is the Reynolds number (Re)?
The ratio of the mass of the system to the volume of the system.
What is density?
The lipid bilayer containing proteins that separates the cell from the external environment.
What is the plasma membrane?
This system transport blood from the heart to the tissues.
What is the arterial system?
Found in the intestine, these structures provide additional surface area to transfer mass across the cell membrane.
What are (micro)villi?
The ratio of mass transport by convection to mass transport by diffusion
The measure of the frictional resistance to flow.
What is viscosity?
Examples include tight, gap, synaptic, and adherens.
What are junctions?
This system transports blood from the tissues to the heart.
What is the venous system?
In ultrafiltration in the kidneys, a pressure difference induces flow from capillaries across this structure, comprising a layer of fenestrated endothelium, a basement membrane, and a layer of epithelial podocytes.
What is the glomerulus?
The relative resistances of diffusion and convection to mass transfer.
What is the Biot number (Bi, mass transfer Bi)?
The force per unit area, where the force is applied tangential to the surface.
What is shear stress?
Cells lining the blood and lymphatic vessels.
What are endothelial cells?
Volume fraction of red blood cells.
What is hematocrit?
This arterial disease is characterized by the formation of lesions in the arterial intima, consisting of lipids, proteins, and cells.
What is atherosclerosis?
What is Fick's (first) law?
Cells present at tissue interfaces.
What are epithelial cells?
The amount of blood per minute that flows from the heart (product of stroke volume and heart rate).
What is cardiac output?
The multistep process by which cancer spreads.
What is metastasis?
Transport by bulk motion of a fluid.
What is convection?