Josh-Daniel S. Davis (joshdavis) wrote,
Josh-Daniel S. Davis
joshdavis

Yuck!

Short- and medium-chain fatty acids are absorbed directly into the blood via intestine capillaries and travel through the portal vein just as other absorbed nutrients do.

However, long-chain fatty acids are too large to be directly released into the tiny intestine capillaries. Instead they are absorbed into the fatty walls of the intestine villi and reassembled again into triglycerides.

The triglycerides are coated with cholesterol and protein (protein coat) into a compound called a chylomicron.

Within the villi, the chylomicron enters a lymphatic capillary called a lacteal, which merges into larger lymphatic vessels.

It is transported via the lymphatic system and the thoracic duct up to a location near the heart (where the arteries and veins are larger).

The thoracic duct empties the chylomicrons into the bloodstream via the left subclavian vein.

At this point the chylomicrons can transport the triglycerides to where they are needed.

Ref: http://en.wikipedia.org/wiki/Fatty_acid#Digestion_and_intake
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