Ch. 42- Circulation and Gas Exchange.docx

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Department
Biology
Course
BIOL 240W
Professor
D R.J O H N P E L E S
Semester
Spring

Description
Biology 240 Dr. Peles Date: / / . Circulation and Gas Exchange: Chapter 42 I. Circulatory Systems A. Processes Linked to Circulation 1. Respiration and gas exchange 2. Digestion 3. Excretion B. Mechanisms of Circulation 1. Gastrovascular cavity 2. Circulatory system i. Circulatory system components a. Circulatory fluid b. Interconnecting vessels c. Muscular pump ii. Types of circulatory systems a. Open systems b. Closed systems i. Single circulation ii. Double circulation II. Mammalian Heart A. Cardiac output- Volume of blood per minute that is pumped by the left ventricle into the systemic circuit B. Stroke volume- Amount of blood pumped by left ventricle in each contraction C. Control of heart rate 1. Pacemaker- Group of cells that has the fastest rate of spontaneous contraction in a mass of electrically coupled cells (aka sinoatrial node) 2. Central nervous system III. Blood Vessels & Blood Pressure ~ 1 ~ Biology 240 Dr. Peles Date: / / . IV. Capillary Function A. Capillary Exchange 1. Hydrostatic pre
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