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23 Cards in this Set
- Front
- Back
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What is ventricular diastole?
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When the ventricles are full and the valves have closed, and the heart is completely at rest.
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How long does diastole last?
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A few milliseconds
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What is the reason that the ventricle squeeze upward, from the apex toward the base?
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The pulmonary trunk, pulmonary arteries into lung to pick up oxygen.
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What prevents blood from pushing up on the closed valve?
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Papillary muscles and chordie tendina act as apposing forces to close the valve
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What happened if the valve pops open?
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Not as much blood goes to the lungs.
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What happens if there is a defect in the valve causing a blow back? What kind od sound do you hear?
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You have a murmur aka prolaps. Swish sound
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What effects the color of blood?
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The amount of oxygen that is bound to it.
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What color is blood when you take off oxygen?
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Purple red
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What is the definition of an artery?
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A vessel that carries blood away from the heart
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What is the definition of a vein?
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A vessel that carries blood towards the heart
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When the blood comes back to the left side of the heart the blood is called?
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Oxygenated blood.
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How fast can a RBC move through the lungs?
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¾ of a second
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How many hemoglobin molecules do you have in a single RBC?
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One million
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How many oxygen molecules do we have to pick up inside on RBC?
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Four million
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How fast does the RBC pick up oxygen in a healthy person?
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¼ second
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Why does RBC not slow down to ¾ of a second to pick up oxygen?
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To pick up its complement of oxygen at it maximum speed.
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Do both of the ventercals fill up at the same time and do the valves closes at the same time?
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Yes
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Is their enough pressure in the ventricle to squeeze all the blood out? Explain.
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No, the is a small amount left that cause the semiluner valves to snap shut.
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When listing to the heart sound “lub dub” what is this from?
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The closing of the semi lunar valves and AV valves
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What is the Lub sound from?
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The closing of the AV valve
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What is the Dub sound from?
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The closing of the semi lunar valves
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What happened when the heart is out of sync?
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The ventricles are squeezing out of order.
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When a person stands on their hands, why don’t they die?
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The atria still contracts, causing blood to be forced through to the ventricle causing the valve to snap shut, then the blood will be squeezed to the body
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