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Filtration Coefficient
In physiology, filtration coefficient (Kf) is the product of a biological membrane's permeability to water and the surface area of the membrane. Typical units of Kf are mL/min/mmHg. The rate of filtration across the membrane is, by definition, the product of Kf and the net filtration pressure across the membrane. Kf is frequently applied to the glomerular capillaries, which filter water into Bowman's capsule to form urine. Typically, in an adult human, the net filtration pressure is 10mmHg and Kf 12.5mL/min/mmHg, giving a glomerular filtration rate (GFR) of 125mL/min. A decrease in Kf due to reduced number of glomeruli or reduced permeability will reduce the GFR at a given filtration pressure References {{portal bar, Medicine Renal physiology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2617 Net Filtration PressureN
__NOTOC__ Year 617 ( DCXVII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 617 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Byzantine Empire * Byzantine-Sassanid War: The Persian army under Shahin Vahmanzadegan conquers Chalcedon in Anatolia, and reaches the Bosporus, threatening Constantinople. Emperor Heraclius begins peace negotiations, promising an annual tribute of 1,000 talents of gold and silver. Shahin withdraws with his army to Syria, to focus on the invasion of Egypt. * The Avars send envoys to Constantinople for a meeting with Heraclius. He is warned about an ambush, and flees for safety behind the city walls in time. Angry at the failure to capture the Byzantine emperor, the Avars plunder Thrace and return to the Danube River, carrying off 270,000 people. Europ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
