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26 Cards in this Set
- Front
- Back
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The heart is a muscular pump, it's job is to do what?
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To pump blood throughout the body via blood vessels.
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The blood vessels are also known as what?
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The vascular system.
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What is the pericardium?
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The fibrous sac that covers the heart, it has some fluid in it for lubrication.
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About how big is ones heart?
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The size of their fist.
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The average adult heart beats how many times per minute?
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70-80
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What are the 4 hollow chambers inside the heart?
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There are 2 atria and 2 ventricles.
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Are the ventricles upper or lower?
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Lower portion of the heart.
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List the grooves that are on the outside of the heart.
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The interventricular groove, the left atrioventricular groove and the right atrioventricular groove.
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What artery is in the interventricular groove?
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Interventricular artery
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Which major arteries are in the atrioventricular grooves?
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The left and right coronary arteries.
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The ear like things on the side of each ventricles are called what?
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They are auricles.
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What 2 ways help you determine which is the left and which is the right side of the heart?
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The apex always points to the left, and the left wall is thicker due to the more muscle mass.
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Why would the left side of the heart be thicker with more muscle mass?
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Because the aorta comes out of the left ventricle and the aorta has to pump blood to the whole body, whereas the right side only has to pump to the lungs.
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Define Artery
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A blood vessel that carries blood away from the heart, the blood goes to all parts of the body, and the blood within the Aorta has high levels of Oxygen.
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What are the two major arteries?
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The aorta, and the 2 pulmonary arteries.
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What does the aorta do?
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It carries blood out of the left ventricle and sends the blood to all parts of the body.
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What do the pulmonary arteries do?
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They come out of the right ventricle and they carry blood to the lungs to get oxygen.
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Define Veins
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Blood vessels that carry blood to the heart.
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List the 2 major veins.
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The pulmonary veins and the superior and inferior vena cavas.
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What do the pulmonary veins do?
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They come from the lungs and bring blood (with high levels of oxygen) to the left atrium.
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What does the vena cava do?
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They carry blood from all parts of the body to the right atrium. The superior carries from the upper body, the inferior carries from the lower body.
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Is the blood in the vena cavas high or low levels of oxygen?
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Low, they have already delivered the oxygenated blood to the body cells.
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What is the pulmonary circulation?
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It goes from the right ventricle, out the pulmonary trunk and into the pulmonary arteries to the lungs to get oxygen, then it goes back to the heart through the pulmonary veins and into the left atrium.
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What is the systemic circulation?
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It starts in the left ventricle, goes out the aorta to all parts of the body to drop off oxygen then it goes back to the heart through vena cavas into right atrium.
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What is the route of circulation?
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Right Atrium ~> right ventricle ~> pulmonary arteries ~> lungs ~> pulomonary veins ~> left atrium ~> left ventricle ~> aorta ~> body ~> vena cava ~> back to the start
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About how long would it take an average blood volume of 5L to circulate through the body once?
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60 seconds.
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