The Circulatory System1.docx - The Circulatory System Vascular and Lymphatic Physiology The cardiovascular system provides a functional connection

The Circulatory System1.docx - The Circulatory System...

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The Circulatory System: Vascular and Lymphatic Physiology The cardiovascular system provides a functional connection between individual organs o o Arterial pressure (perfusion pressure) is tightly regulated o Parallel arrangement of arteries ensures all organs receive “fresh” blood, and allows for local regulation of perfusion by arterioles o Exchange of materials between blood and tissues occurs at the capillaries o Arterial system: from heart to capillaries Arterial pressure (perfusion pressure) is tightly regulated High pressure system providing enough pressure for blood to flow through the rest of circulation o Parallel rearrangement of arteries ensures all organs receive “fresh” blood, and allows for local regulation of perfusion by arterioles If you have a tissue bed that’s not metabolically active, don’t need to send as much blood there - regulation o Exchange of materials between blood and tissues occurs at the capillaries Hemodynamic principles govern the flow of blood through each level of the circulation
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Which level imposes the most resistance? Arterioles
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