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Structure and Function Of Blood Vessels

Structure and Function Of Blood Vessels. By Hazel Isles and Neil Matheson . Arteries. An ARTERY is a vessel that carries BLOOD AWAY FROM THE HEART. THINK OF IT AS, “THE AA IS HERE TO HELP” The artery has a thick muscular wall. Which can carry high pressures of oxygenated

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Structure and Function Of Blood Vessels

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  1. Structure and FunctionOf Blood Vessels By Hazel Isles and Neil Matheson

  2. Arteries An ARTERY is a vessel that carries BLOOD AWAY FROM THE HEART. THINK OF IT AS, “THE AA IS HERE TO HELP” The artery has a thick muscular wall. Which can carry high pressures of oxygenated Blood away from the heart. However, THE PULMONARY ARTERY is better for Carrying deoxygenated blood. Every heart beat can be felt with a pulse, this is when blood is forced along arteries at high pressure. Artery walls contract to prevent blood from resting in the lower part of the body which keeps blood circulated.

  3. Veins • When many capillaries unite together to make larger vessels, these vessels in turn form into VEINS. • Veins carry blood to the heart, theycontain valves in order to stop blood flowing backwards • Veins also have a muscular wall thinner than that of the artery. This is because the deoxygenated blood flows at a lower pressure.

  4. Capillaries • An artery DIVIDES into smaller vessels and into a crammed network of thin walls called CAPILLARIES Which are very close to living cells. • veins branch at their beginnings into tiny venules which join capillaries TURN TO PAGE 159 IN YOUR TEXTBOOK AND DRAW THE SMALL CAPILLARIE DIAGRAM.

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