Fat enters the venous system from the digestive system via the:A. hepatic artery.B. hepatic vein.C. thoracic duct.D. epithelial cells lining the duodenum.E. hepatic portal system.5
Question
Fat enters the venous system from the digestive system via the:A. hepatic artery.B. hepatic vein.C. thoracic duct.D. epithelial cells lining the duodenum.E. hepatic portal system.5
Solution
The correct answer is C. Thoracic Duct.
Here's the step by step explanation:
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When you consume food, it goes through your digestive system. Fats in the food are broken down in the stomach and small intestine.
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These fats are then absorbed by the epithelial cells in the small intestine and reassembled into triglycerides.
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These triglycerides are packed into chylomicrons, which are lipoproteins that transport fat.
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The chylomicrons are too large to enter the bloodstream directly. Instead, they move into the lymphatic system, specifically into the lacteals, which are small lymph vessels in the villi of the small intestine.
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The chylomicrons then travel through the lymphatic system and enter the bloodstream via the thoracic duct, which is the largest lymphatic vessel in the body.
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Therefore, fat enters the venous system from the digestive system via the thoracic duct.
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