Blood pressure is the force per unit area exerted by the blood against a vessel wall and is expressed in millimeters of mercury (mm Hg). Resistance is a measure of the friction between blood and the vessel wall, and arises from three sources: blood viscosity, blood vessel length, and blood vessel diameter.apillaries are the smallest vessels and allow for exchange of substances between the blood and interstitial fluid. Continuous capillaries are most common and allow passage of fluids and small solutes. Fenestrated capillaries are more permeable to fluids and solutes than continuous capillaries.
A House Divided Against Itself Cannot Stand Abraham Lincoln June 1858. Lincoln delivered this famous speech, noted for the phrase a house divided against itself cannot stand, when accepting the Republican nomination for U.S. Senate from Illinois in June of 1858.
A man stands his ground in an argument, when he is able to maintain it, or is not refuted. To stand it, to bear; to be able to endure; or to maintain ones ground or state; a popular phrase. To stand trial, is to sustain the trial or examination of a cause; not to give up without trial. STAND, n. 1.