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Blood Vessels

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jen baiocco

on 13 April 2010

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Transcript of Blood Vessels

Blood vessels there are 3 types
capillaries How do they differ? carry blood away from heart
high pressure carry blood toward heart
low pressure
valves connect arteries & veins
one cell thin
low pressure
site of diffusion with cells What is blood pressure? Blood pressure is the force of blood on the walls of the arteries What is normal blood presure? 120/80 120/80 systolic pressure-
the higher # when the ventricles contract diastolic pressure-
the lower # when the ventricles are relaxed 120/80 How is blood pressure controlled? Blood pressure is controlled by the brain Nerve cells send messages to the heart telling it to speed up or slow down This is an example of your body maintaining homeostasis What is pulse? Pulse is the number of times your heart beats per minute The average pulse is
72 bpm Atheroschlerosis....

what's that??? Atheoschleosis is the buildup of fat on the walls of the arteries A heart attack is a blockage in the coronary arteries Hypertension...

what's that??? hypertension is high blood pressure 140/90 Heart failure is a weakened heart or valves Blood not pumped efficiently How do I prevent cardiovascular disease? don't smoke
eat a healthy diet
lower stress What disesases affect the cardiovascular system?
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