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19 Cards in this Set
- Front
- Back
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What is the larges lymphatic organ in the body?
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Spleen
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Where is the spleen located?
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In the left upper abdominal quadrant, inferior to the diaphragm and adjacent to ribs 9-11
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What is located in the left upper abdominal quadrant, inferior to the diaphragm and adjacent to ribs 9-11?
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spleen
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What color is the spleen and what does it lie lateral to and postlateral to?
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red, left kidney and posterolateral to the stomach
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What aspect of the spleen is convex and rounded, what is it called?
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posterolateral aspect (called the diaphragmatic surface)
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Where is the diaphragmatic surface of the spleen?
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posterolateral aspect
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What is the concave anteriomedial border of the spleen called?
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the visceral surface
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What does the visceral surface of the spleen contain?
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hilum, where blood vessels and nerves enter and leave the spleen.
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What part of the spleen do blood vessels and nerves enter and leave the spleen. Where is this structure located on the spleen?
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hilum, concave anteromedial border (the visceral surface)
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What delivers blood to the spleen? What is the pathway from the heart for this artery?
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The splenic artery from the celiac trunk from the descending abdominal aorta from the descending thoracic aorta from the aortic arch from the aortic semilunar valve from the left ventricle of the heart
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What removes blood from the spleen?
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into the hepatic portal vein
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What always touches the hilum of the spleen?
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the tail of the pancreas ( a soft lobular organ often obscured by intestinal mesentery)
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What surrounds the spleen?
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a dense irregular connective tissue "capsule"
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what monitors the blood for antigens from the spleen?
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t-lymphocytes, b-lympohcytes, and macrophages
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What are some primary functions of the spleen?
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monitoring blood for antigens, blood reservoir, has macrophages that phagocytize bacteria
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How does the spleen serve as a blood reservoir?
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In situations where more erythrocytes and greater oxygen delivery are needed, such as during exerces, these erythrocytes reenter the bloodstream.
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Sever trauma to the spleen results in what?
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massive hemorrhage
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What do the numerous macrophages do in the spleen
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phagocytize bacteria and foreign debris from the blood, and remove old defective erythrocytes and platelets
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Why do elderly tend to be more prone to developing cancers?
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they thymus and the lymphatic systems' ability to provide immunity and fight disease decreases as we get older.
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