Ingesting Cholsterol
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Ingesting Cholsterol
Okay, I realize cholesterol is a lipid, but I am unclear how it is managed in digestion. What I mean is, is the cholesterol impervious to all gastric juices? Does it just absorb into the duodenom? Is there any breakdown of the cholesterol before absorbtion into the bloodstream?
I looked all through my Campbells book, but very little is discussed on this particular molecule.
Thanks
I looked all through my Campbells book, but very little is discussed on this particular molecule.
Thanks
- MrMistery
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no, it is not broken down by any enzyme. It is simply absorbed in the small intestine as is.
If you want to study physiology, I recommend you purchase Boron. Campbell is good for introduction...
If you want to study physiology, I recommend you purchase Boron. Campbell is good for introduction...
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
Re: Ingesting Cholsterol
As always you have been a help. Thanks. Are you referring to this book?
http://www.amazon.com/Textbook-Medical- ... 0721632564
http://www.amazon.com/Textbook-Medical- ... 0721632564
- MrMistery
- Inland Taipan
- Posts: 6832
- Joined: Thu Mar 03, 2005 10:18 pm
- Location: Romania(small and unimportant country)
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yeap. There are other physiology books out there. It matters less what you read, if you read one at all.
BTW, cholesterol is sometimes present in the diet esterified with fatty acids. If that is the case, the ester bond is first broken and then the cholesterol is absorbed.
BTW, cholesterol is sometimes present in the diet esterified with fatty acids. If that is the case, the ester bond is first broken and then the cholesterol is absorbed.
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
Re: Ingesting Cholsterol
Cholesterol doesn't break down during digestion. After absorption, dietary cholesterol is picked up by chylomicrons and transported to the liver.
In case you're interested, in the liver, cholesterol has three possible fates: conversion into bile acids (used to emulsify dietary fats), which is the only route that cholesterol can exit the body; to serve as a precursor for steroid hormones, e.g. progesterone, testosterone, cortisol; or transport out of liver to be taken up by peripheral tissue and used in membranes (to regulate fluidity).
In case you're interested, in the liver, cholesterol has three possible fates: conversion into bile acids (used to emulsify dietary fats), which is the only route that cholesterol can exit the body; to serve as a precursor for steroid hormones, e.g. progesterone, testosterone, cortisol; or transport out of liver to be taken up by peripheral tissue and used in membranes (to regulate fluidity).
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