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39 Cards in this Set
- Front
- Back
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which side of the heart is oxygyen rich |
left |
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which side of the heart is oxygen poor |
right |
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how many one-way valves are there in the heart |
4 |
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name three components found in blood |
platelets, plasma, red blood cells (erythrocytes), white blood cells |
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arteries carry blood |
away from the heart |
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veins carry blood |
toward the heart |
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capillaries connect or link |
veins to the arteries |
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what is the function RBCs |
to carry oxygen |
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what is the function of WBCs |
to fight disease |
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what is the function of platelets |
to clot blood |
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what is the function of valves |
to keep the blood from flowing backwards |
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what body stem moves blood through the body |
circulatory system or cardiovascular system |
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what is the function of the atria |
to receive blood |
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what is the function of ventricles |
the rights side pumps blood to the lungs, the left pumps blood to the aorta and to the body |
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what are the three main structures of the circulatory system |
the heart, the blood, the blood vessels |
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what causes blood pressure |
the force of blood pushing against the blood vessel walls |
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systolic number |
the top number, when the ventricle is contracting or pumping |
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diastolic number |
the bottom number, when the ventricle is filling |
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if you have high blood pressure you are in risk of a |
heart attack |
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another name for high blood pressure is |
hypertension |
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what is the largest artery in the heart |
the aorta |
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what are some disorders that affect the efficiency of the heart |
hypertension, plaque building up |
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how can you keep the cardiovascular system healthy |
don't smoke, stress, eat a lot of salt, workout, and a lowfat diet. or else your heart will work overtime |
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a heart attack affects heart cells by |
cutting off the oxygen supply to the heart |
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what object forms image like your eyes |
camera |
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an object that DOES NOT allow light to pass through is |
opaque |
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visible light can be separated into different colors using |
a prism |
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what part of the eye changes size as the amount of light changes |
pupil |
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nearsightedness is present in a person who is able to see |
close but not far |
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which structure in the eye processes light by the retina |
rods and cones |
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almost all light passes through a |
transparent material |
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what type of lens does a farsighted person need to correct their vision |
convex |
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what type of lens does a near sighted person need to correct their vision |
concave |
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what are some things that you can do to have a healthy eye |
wear sunglasses, wash your hands, have a healthy lifestyle |
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SOME light passes through a |
translucent material |
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a mirage results from light being refracted through |
air layers of different densities |
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what causes eyes to appear blue or brown? SHORT ANSWER |
as you age the brown pigment forms on the back part of the iris. amount of pigment varies from person to person |
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list the 3 eye problems and what they are |
Astigmatism: blurriness at all distances Farsightedness: near objects become blurry Nearsightedness: far objects become blurry |
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discuss the flow of blood through the human heart |
oxygen poor blood enters the heart through the right atria and goes through a valve to the right ventricle. The blood then goes to the pulmonary artery to the lungs. Oxygen rich blood comes back through the left atria, the blood passes through a valve to the left ventricle. The blood goes through the aorta and to the body. |
