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 group of pro-war Republicans, led by Speaker of the House Henry Clay, argued that military force was the only option left to combat British imperiousness. These âWar Hawksâ were not a majority of the party, but over time, their influence acted on more skeptical party members. President Madison eventually did bring a declaration of war to Congress, but his leadership in planning for war was mostly absent.