BIOC34H3 Study Guide - Afferent Arterioles, Efferent Arteriole, Oncotic Pressure

• School: UTSC
• Department: Biological Sciences
• Course: BIOC34H3
• Professor: Stephen Reid

Document Summary

Lecture 16 study notes: hydrostatic pressure p = pcapillaries pisf, isf = interstitial fluid, pcap = hydrostatic pressure in capillaries. hydrostatic pressure in capillaries drives fluid out of the capillary (i. e. filtration) and is highest on arterial side, lower on the venous side. causes fluid movement down pressure gradient: pisf = hydrostatic pressure in the interstitial fluid, oncotic pressure = cap isf, oncotic pressure (opposes hydrostatic pressure) is exerted by proteins and drives fluid into capillaries. cap = oncotic pressure in the capillaries: this pressure is constant throughout the capillary beds. Lots of protein pressure in plasma flowing in capillary bed hence oncotic. on the arterial side of capillary bed, nfp is positive, so fluid is drawn out of capillaries (filtration outward) www. notesolution. com. through lymph capillaries, which return fluid back to vena cava: kidneys filters plasma volume every 22 minutes, receive about 20% of cardiac output, nephrons are the functional unit of kidneys.