Chapter 28: Circulation and Gas Exchange

Pumping It Up: High Blood Pressure on the African Savanna

28.1 The Human Cardiovascular System

28.2 Blood Vessels and Blood Flow

28.3 Breathing in Humans

28.4 Principles of Gas Exchange

28.5 How Animals Transport Gases to Respiring Cells

Why Giraffes Have Such High Blood Pressure

Biology in the News: WADA Reports Breakthrough in Gene Doping Tests

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