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The structure of the heart and its function

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The structure of the heart and its function

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The superior vena cava and the inferior vena cava.
Function: to pump blood around the body

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The path that blood takes around the body.

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The path that blood takes around the body.

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First the heartbeats and the blood goes through the arteries and then goes to the heart through veins and that repeats.

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this system works with the respiratory system 

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this system works with the respiratory system 

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it works with that system by the blood carrying oxygen to the lungs

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Vein- a blood vessel
cardiovascular system- System that pumps blood around the body
valve- Allows blood to flow in only one direction to the heart
vein- Carries blood to the heart
heart attack- the closing or death of arteries
heart- A hollow muscular organ that pumps blood through the cardiovascular system
pacemaker- Stimulates the heart muscle and regulates its contractions
aorta- Main artery in body that supplies oxygenated blood through the body
blood pressure- the force of ventricles contracting
atrium- Two upper cavaties that pass blood to ventricles
artery- blood vessels that carry blood away from the heart
coronary artery- artery supplying blood to heart
atherosclerosis- A disease when plaque and fatty material line the walls of arteries
ventricle- A hollow part in an organ
capillary-exchanges material
diffusion- Passive movement of molecules from higher concentration to lower concentration
hypertension- Abnormally high blood pressure

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The origin of the heartbeat and why the heartbeat changes during exercise

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The origin of the heartbeat and why the heartbeat changes during exercise

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the heartbeat comes from the contracting and relaxing of the heart and it when we exercise because our body needs more blood.

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The functions of the arteries, capillaries, and veins

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The functions of the arteries, capillaries, and veins

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Artery- Blood vessels that carry blood away from the heart.
Capillaries- exchanges materials.
Veins-Vessels that carry blood to the heart.

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One ailment or disease that can effect the cardiovascular health

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One ailment or disease that can effect the cardiovascular health

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Heart attacks- caused by the build-up and closing of arteries

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Caused by the force of ventricles contracting.

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Behaviors that maintain the cardiovascular health

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Behaviors that maintain the cardiovascular health

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leukocytes are the body's primary defense.

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to send/pump blood through the body to make sure your body gets the blood it needs.