Describe the route a dietary lipid would take to get from its location of absorp

Question

Describe the route a dietary lipid would take to get from its location of absorption in the small intestine to its entry into the right atrium of the heart

Explanation / Answer

In intestine, triglycerides (dietary lipids) convert into fatty acids and glycerol. These fatty acids, now convert into small lipid droplets known as micelles, and are absorbed by the small intestine cells known as enterocytes-----> enterocytes use these micelles to form triglycerides in SER-----> triglycerides are packed with other lipids and cholesterol to form chylomicrons in Golgi apparatus of enterocytes-----> here these chylomicrons are transported to the plasma membrane----à From here, they are dumped to ECM---à These chylomicrons are absorbed by lymphatic vessels---à chylomicron rich lymph drains into lymphatic vessels of each system including heart and its right atrium. These lipids are utilized in the body like this.

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