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/sci/ - Science & Math

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5333425 No.5333425[DELETED]  [Reply] [Original]

What happens to fructose when it reaches the intestine?
>digested into intestinal cavity goes to the blood
>turned into glucose
>glycogen

I have no idea what I'm doing...
>

>> No.5333477
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5333477

i didn't even know eyes could get that red.... wat.

>> No.5333486

>>5333477
his blood vessels all broke

probably did something really dumb that strained them to an extreme.

>> No.5333493

>>5333486
I took a tough shit and popped my blood vessels.

>> No.5333508

>>5333486
Can this happen with the blood vessels in your brain as well?

>> No.5333509

>>5333493
I think that just answered OPs question. Eat less fructose and add some fiber to your diet.

>> No.5333525

>>5333493
Have fun going blind

>> No.5333529

>>5333493
OP you're an insane and mad idiot shit eater

take a laxative god damn

>> No.5333561

It's broken down into shorter glucose molecules by amylase in saliva and the stomach. Mostly its absorbed at the small intestine, but sugar can enter the bloodstream through the stomach lining, large intestine, and even your mouth lining. People so hyplogylcemic their digestive system shuts down can be saved by putting some sugars in their mouth.

>> No.5333562

>>5333425
transported to the liver via portal vein

>> No.5333569

>>5333525
My primary physicican said I won't go blind. They should clear up in around 2-3 months.

>> No.5333573

>>5333561
Thank you anon!

>> No.5333580

>>5333561
>>5333569
this is not how fructose is digested. it is not itself a polymeric chain and as such amylase has no action upon it. amylase is responsible for digesting starches, not sugars.

>> No.5333581

>>5333425
you need to ask a more specific question.
>>5333561 is correct, is there anything else you're still curious about?

>> No.5333587

>>5333581
Sorry about not being specific.

Pretend you're a molecule of fructose in a sugary drink that has been consumed by a high school athlete who is about to run track. Describe what happens to the molecule of fructose starting with you absorption into the intestines. Describe the tissues and structures you interact with and emphasize the fate of glucose on the cellular level.

>> No.5333594

http://en.m.wikipedia.org/wiki/Fructolysis

>> No.5333593
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5333593

>mfw I read the question

>> No.5333609
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5333609

You're welcome

>> No.5333612

>>5333594
Thank you so much!

Now...wtf does it mean by the fate of glucose on the cellular level?

>> No.5333608

>>5333587
i'm not sure about specific enzyme names, but digestion of simple sugars doesn't begin until the small intestine, whereupon it is hydrolyzed to glucose and absorbed by brush-border enzymes into the blood stream. boom, done.
far more interesting (and perhaps more relevant) is what >>5333580 said: the digestion of starch.

>> No.5333616

>>5333587
sorry, i didn't finish the question. as for the fate of glucose on the cellular level, assuming insulin is present and assuming the glucose is actually needed, it is absorbed by cells using GLUTs, and then enters glyocolysis and oxidative phosphorlyation. if the glucose is in excess it is used to make triglycerides, which are stored as fat.

>> No.5333621 [DELETED] 

>>5333620
Glucose is never excreted in urine unless you have diabetes

>> No.5333620

>>5333616
additional: some of it is also excreted in the urine.

>> No.5333622

>>5333587
It depends on what section of intestines you are referring to, but digestion has started well before the point you are at. Once the bolus gets down into the large intestine it really isn't "digesting" any more. If this is *ahem* a homework assignment, I would google "duodenum".

>>5333561 was very correct.

>> No.5333626

>>5333612
the 'fate's line is referring to the fact that glucose is 'fated' toward metabolism in peripheral body cells like in muscle and brain tissue. on the other hand, fructose is 'fated' to exclusive metabolism in the hepatic cells of the liver

>> No.5333631

>It's broken down into shorter glucose molecules by amylase in saliva and the stomach.
Wtf? fructose isn't made of glucose
Amalyse doesnt break down sugar

>> No.5333634

>mfw people think sugar is sugar
>mfw the idiots in this thread are from the corn refiners association of America
>mfw I have no face

>> No.5333699

>>5333616
How does that affect the fructolysis process?

>> No.5333708

>>5333699
it doesn't. the comment was entirely irrelevant. the reason the body doesn't metabolise fructose in any tissues other than the liver is because all other cells lack fructose-5-kinase enzymes which are necessary to transport fructose into a cell.

>> No.5333720

>>5333699
you asked about the fate of glucose on the cellular level.
>>5333708
he asked about the fate of glucose on the cellular level

>> No.5333726

>>5333708
So, what the fuck does the fate of glucose have to do with this?

>Dammit...I'm lost

>> No.5333731

>>5333616
wasn't a question

OP's question involved fructose. not glucose. glucose is merely a situational biproduct of fructose metabolism by conversion to glycogen and then glycogenolysis into glucose. other than that, glucose shouldn't really have entered the discussion.

>> No.5333748

>>5333731
Well, the question asks me to emphasize the fate of glucose on the cellular level...

It's throwing me off because I'm supposed to be talking about fructose.