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24 Cards in this Set
- Front
- Back
cardiovascular system
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consists of the heart, blood vessels, and blood
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heart
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a hollow muscular organ that pumps blood throughout the body
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atrium
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the upper 2 chambers of the heart that recieve blood
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pacemaker
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send out signals that make the heart muscle contract
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ventricle
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the 2 lower chambers of the heart that pumps blood out
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valve
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a flap of tissue that prevents blood from flowing backwards
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artery
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blood vessels that carry blood away from the heart
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capillary
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tiny narrow vessels that blood flows into
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vein
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blood vessles that carry blood back to the heart
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aorta
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the largest artery in the body
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coronary artery
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carries blood to the heart itself
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pulse
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the alternating expansion and the relaaxatio of the artery wall
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diffusion
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when molecules move from an area of higher concentration to an area of lower concentration
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pressure
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the force per unit area
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blood pressure
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a force against the wall of the blood vessels
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what are the functions of the cardiovascular system?
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- carries needed substances to cells
- carries waste products away from cells |
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what is the function and structure of the heart?
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- it pushes blood through the blood vessels
- each side had 2 chambers (upper and lower) |
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what path does blood take though the cardiovascular system?
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- blood travels from the heart to the lungs and then back to the heart
- then throughout the body and returns back to the heart |
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what are the functions and structures of arteries, capillaries, and veins?
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arteries: walls are generally very thick and consists of 3 cell layers
capillaries: materials are exchanged through blood and the bodies cells veins: blood enters larger blood vessels which are called veins which carries blood back to the heart |
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how does the cardiovascular system help fight disease?
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by having disease fighting blood cells known as white blood cells
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how do skeletal muscle help move blood in veins?
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the contraction of the muscles
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where does the aorta carry blood to?
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from the heart to the body
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after blood leaves the right atrium, where does it flow to?
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right ventricle
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what would happen if a person had a hole in the septum?
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it would allow oxygen poor blood to mix with oxygen rich blood
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