Lecture 02 - 010611

Lecture 02 - 010611 - Lecture Professor Julian Schroeder...

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1 Lecture Professor Julian Schroeder Sections start(ed) this week. TA Sections sign up: North entrance lobby of Muir Biology Building (1 st floor) I. Functions of Circulation II. The Heart and Circulation III. Blood Pressure
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2 INTERNAL HOMEOSTASIS Figure 40.4 A. Transport controls rate of supply according to need (heartbeat) B. Diffusion is too slow dilution of nutrients ~ (distance) 2 diffusion time is proportional to (distance) 2 I. FUNCTIONS OF CIRCULATION Pumped Transport versus Diffusion
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3 Circulatory Schemes of Vertebrates Figure 42.5 II. FUNCTIONS OF CIRCULATION A. General Structures ATRIUM The two chambers of the heart that receive incoming blood (collection) VENTRICLES The two chambers of the heart that pump blood out of the heart (ejection) ARTERIES: carry blood away from the heart VEINS: return blood to the Atria of the heart B. Heart functions as a pump Figure 42.6
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4 II. FUNCTIONS OF CIRCULATION C. The Heart Cycle: Sequence of events RIGHT SIDE OF HEART 1) Right atrium fills from Vena Cava
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Lecture 02 - 010611 - Lecture Professor Julian Schroeder...

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