o The pressure drops 55mmHg in the arterioles o Arterioles Resistance Vessels o

# O the pressure drops 55mmhg in the arterioles o

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o The pressure drops 55mmHg in the arterioles. o Arterioles = Resistance Vessels o Pressure of blood which leaves the arterioles to enter the capillaries is about 40mmHg. - The pressure drops ~20mmHg in the capillary. o Pressure of blood which leaves the capillaries to enter the venules is ~10-15mmHg. o Capillaries = Exchange vessels - A small but significant amount of resistance occurs in the venous side of circulation such that by the time blood reaches the right atrium the pressure is almost 0.