3U03 Lectures 1-7 for Sept

3U03 Lectures 1-7 - Biology 3UO3 Animal Physiology Homeostasis Chris Wood LSB 227(usually there 5:00 7:00 p.m Mon-Thurs Course Outline is posted on

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Biology 3UO3 - “Animal Physiology - Homeostasis” Chris Wood - LSB 227 (usually there 5:00 - 7:00 p.m, Mon -Thurs.) Course Outline is posted on ELM Lectures will be posted on ELM in a.m. before lecture Text: Guyton & Hall (2006), Textbook of Medical Physiology, 11th Edition Lab manual -sold in lab next week, bring $10 Labs start next week, first lab may be downloaded from ELM (under "Course Outline") - evaluated by a quiz worth 2% at end of lab period. Bring memory stick (essential ), watch, & calculator to Lab.
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Marks: 25% Midterm, Mon. Oct 26, in class, 1 h 35% Lab Reports /Seminars/Lab Exam (Thurs. Nov. 26 in class, 1 h) 40% Final Exam (December), 2 h If there is a strike, labs will be cancelled until the week after the strike is over. Other sections of the course will be prorated upwards in mark value to compensate for the % of lab mark lost due to the strike. Section Changes? --> SOLAR@mugsi.mcmaster.ca
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- 4 lab reports (written individually): 1st lab report = 3 marks 2nd lab report = 4 marks 3rd lab report = 5 marks 4th lab report = 5 marks - 3 quizzes (written individually, at end of the lab) 1st quiz = 2 marks 2nd quiz = 2 marks 3rd quiz = 2 marks - 1 seminar (in pairs) = 4 marks (topics assigned in week 2) - Lab exam (Nov. 26) = 8 marks - Total = 35 marks Note : 3 page limit to Discussion on full lab reports “Late Lab” rule will be strictly enforced. Different lab assessment scheme from last year:
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Fish - single circulation - single ventricle perfuses two resistances in series - de-oxygenated blood returns to a single atrium Amphibians, Reptiles - partially divided circulation - single ventricle perfuses two resistances in parallel - oxygenated blood returns to left atrium - de-oxygenated blood returns to right atrium Birds, Mammals - double circulation - two separate ventricles, two separate atria - two separate circuits in series - blood is pumped twice as it passes through the body - left heart pumps oxygenated blood, right heart pumps de-oxygenated blood 3UO3 - Sept. 10, 2009 Introduction to the Circulation & Pressure-Flow Relationships (Chapters 14, 15, 16, & 17)
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Fig. 14-1 Overview of the Double Circulation = 2 Circuits in Series Three Components to Each: 1. Heart = pump(2 chambers) 2. Blood = carrier fluid 3. Vessels = plumbing Systemic Circuit (body) : - driven by left ventricle - high pressure - high resistance - high volume Pulmonary Circuit (lungs) : - driven by right ventricle - low pressure - low resistance - low volume - same total flow rate Most of blood volume is in the venous parts of the circuits
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Overview of Pressures in the Two Circuits (Human) systolic diastolic This is site of arterial B.P. measurement in next week’s lab. This is site of plethysmography in next week’s lab. Fig. 14-2 MAP = 1 sys. + 2 dias. 3
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ΔP = F x R P 1 P 2 R F F or R The fundamental law of the circulation: ΔP = pressure difference between 2 points in circ. system R = resistance = hindrance to blood flow caused by friction P = force/area exerted by blood against blood vessel walls = energy content/volume of blood - generated by heart contractions Internal (viscosity) External (interaction with vessel wall) ΔP F = blood flow rate between same 2 points
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This note was uploaded on 06/21/2011 for the course BIO 3U03 taught by Professor Childs during the Spring '11 term at McMaster University.

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3U03 Lectures 1-7 - Biology 3UO3 Animal Physiology Homeostasis Chris Wood LSB 227(usually there 5:00 7:00 p.m Mon-Thurs Course Outline is posted on

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