ch5-fats Flashcards
What does level of saturation refer to
Saturation refers to how many hydrogen atoms surround each carbon
Saturated fatty acids can pack tightly together
Monosaturated vs polyunsaturated fatty acids
mono- Lacks hydrogen atoms in one region (have one double bond)
Poly- Lack hydrogen atoms in multiple locatons, have two or more double bonds
what is hyrogenation
the addition of hydrogen atoms to unsaturated fatty acids
-converts liquid fats into semisolid/solid forms
What are phosoliped composed of
Glyerol backbone
2 fas
Phosphate
where does digestion of fats begin
in small intestine
what enzyme in mouth begins breakdown of fats in mouth
Lingual lipase
What is the effect of the gallbladder on fat digestion (what stims it and what does it release)
CCk and secretin are released from mucosal cells and stim gallbladder to contract and release bile
what is the effect of bile and pancreatic enzymes on fate
- Bile disperses fat into smaller fat dropleta
- Pancreatic enzymes break triglycerides into 2 seperate fatty acids and a monoglyceride
What does fat enter the mucosal cell as
micelle
What happens in the intestinal mucosal cell to fats
FAs are reattached to monoglyceride to reform triglycerides
-Small amount of pro added to form chlyomicron
Why are short and medium chain fatty acids absorbed more quickly
becuase they are not arranged into chylomicrons
what does lipopro lipase do
Once chylomicron gets to cell in the body it is disassembled into 2 fas and monoglyceride before they enter. after entering they reassemble
What are the fat soluble vits
ADEK
What are the 2 essential fas
Linolic Acid (omega 6)- converted to arachidonic acid
Alpha linoleic acid (omega 3)- converted to EPA and DHA which are important regulators of inflamation/blood clotting/BP
AMDR of fat
20-35%
