[BIOLOGY 3U03] - Midterm Exam Guide - Ultimate 44 pages long Study Guide!

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 3U03
• Professor: Michael O' Donnell

Document Summary

Fish: single circulation (one pump drives blood through gills body heart, single ventricle perfuses two resistances in series, de-oxygenated blood returns to a single atrium. Birds, mammals: double circulation 2 separate circuits in series. Overview of the double circulation = 2 circuits in series. 3 components: heart = pump (2 chambered) Systemic circuit (body): driven by left ventricle: blood = carrier fluid, high pressure, resistance, volume. Pulmonary circuit (lungs): driven by right ventricle. Overview of pressures in the two circuits (human) F = blood flow rate between 2 points in circ. P = pressure difference between same 2 points. P = force/area exerted by blood against blood vessel wall = energy content/volume of blood: generated by heart contractions. R = resistance = hindrance to blood flow caused by friction: 2 sources of resistance in blood flow. Internal (viscosity) and external (interaction with vessel wall) Other useful forms: p = fr (cid:894)oh(cid:373)"s law(cid:895) a(cid:374)d r = p/f.