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How our body uses fat (DIGESTION (Mechanical digestion
Goes first; mouth…
How our body uses fat
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DIGESTION
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Abosption adn Packaging
Fatty acids and monoglycerides are absorved by microvilli, reassembled into triglycerides.
Triglycerides are packed into special particles called chylomicrons are released into lymphatic system and eventually enter the blood.
Chylomicrons activate lipoprotein lipase, which breaks down triglycerides for absorption.
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TRANSPORT
Lipoproteins with a monolayer shell have a hydrophobic interior and the ones that have a bilayer have a hydrophilic interior
The surface of lipoprotein contains cholesterol molecules, apolipoproteins and phospholipids
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ENDOGENEUS FAT
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Storing fat
After the VLDs become LDLs, the fatty acids are then assembled into triglycerides for storage
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Burning fats
Between meals, fatty acids bind to albumin and this give energy to the body
Glycerol is also released and it is used for making glucose
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KETONE BODIES
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During starvation or fasting, acetyl-coenzyme A is overproduced as fatty acid are breaking down
Instead of being fed into the citric acid, some of this coenzymes are converted into ketone bodies in the liver.
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