BIO203_Cardiovasc_1 - The cardiovascular (circulatory)...

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1 The cardiovascular (circulatory) system and its physiology are significant in several regards: •E v o l u t i o n : multicellularity and tissue specialization, coupled with increased size, require bulk transport of important materials • Organism : distribution of respiratory gases, nutrients, chemical messengers, etc ., in a dynamic and adaptive manner to meet physiological needs • Health and Disease : breakdown of homeostatic mechanisms can jeopardize life; adaptive responses to challenges can promote survival; clinical applications ( ex ., angiogenesis) M. Feder, Adv. Physiol. Educ. 29: 3-10, 2005 Bulk Transport Systems • Components – Propulsive organs (hearts; chambered, tubular, ampullar, pulsating vessels) – Pressure reservoir and distributors (arteries) – Transfer systems (capillaries) – Blood reservoir and return system (veins) • Types – Open – Closed Open vs . Closed Circulatory Systems OPEN CLOSED hemolymph [fluid] blood
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This note was uploaded on 09/16/2011 for the course BIO 203 taught by Professor Loretz during the Fall '09 term at SUNY Buffalo.

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BIO203_Cardiovasc_1 - The cardiovascular (circulatory)...

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