B3.2 Transport Study Note PDF
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These notes summarize the function and structure of arteries, capillaries, and veins in the human body, focusing on how these vessels transport blood. The material could be used for a biology study.
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Arteries Function: convey blood at high pressure from heart ventricles to the tissues of the body and lungs Structure o Narrow lumen o Thick wall of outer layer of collagen o Inner layer of muscle and elastic fibers Thick walls prevent the ar...
Arteries Function: convey blood at high pressure from heart ventricles to the tissues of the body and lungs Structure o Narrow lumen o Thick wall of outer layer of collagen o Inner layer of muscle and elastic fibers Thick walls prevent the artery from rupturing under the high pressure Elastic fibers stretch and expand upon the flow of a pulse through the lumen. o Elastic recoil (when the artery returns to its normal size) helps to push the blood forward o Maintain arterial pressure between pump cycles Muscle fibers form a rigid arterial wall that is capable of withstanding the high blood pressure without rupturing Capillaries Function: exchange materials between the cells in tissues and blood travelling at low pressure (
