Digestion of Lipids - Video Tutorials & Practice Problems
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concept
Digestion of Lipids Concept 1
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Hey, everyone. So in this video, we're gonna continue our discussion on the digestion of lipids. Now, unlike carbohydrates, we can say tags are not directly absorbed into the blood following hydrolysis. And when it comes to our continued discussion of lipids, we break it down into steps. D all the way to G in step D. We say that our tag hydrolysis products are MS and then absorbed into the intestinal cells. If we take a look here, remember we created our mono oyl glycerol molecule where we have the severing of certain ETRA linkages following the use of pancreatic lie pieces within the small intestines. Here, they're gonna undergo a modification and absorption for step D they move towards the intestinal cells. So this mass here is our intestinal cells in step E they're reassembled into tags and packaged as Kyal Microns. So here we have our mono Glycerol molecule. It gets reassembled and packaged, it's reformed as tags and those tags are packaged as chal microns. This purple sphere here represents our Kylo Mi and we're going to say here, this would be E now for f these Kyle Micros move out of the intestinal cells and eventually enter the bloodstream. So here are Kyle Myron is exiting the intestinal cells and this is going to be f here, it enters our bloodstream. This leaves us with G where it could do one or two things. It's transported the cells for either energy production. This would happen if it gets transported to things such as the liver or skeletal muscle. Here, we would use the fatty acid that come from these tags in order to use them for energy or they could undergo storage. So instead of going towards the liver or skeletal muscles, those types of, of places they could go to adipose cells in the adipose cells, we have the storage and here we have the image of our floppy disk. So remember before the cloud where we can s uh save everything before we had a mini hard drives, we had floppy disks. All right. So this is some antiquated but still, we can see certain old computers utilize it. It's just a form of storage. Again, here we're talking about a P cells where we have the storage of these kylo micros, right? So just remember here, we're continuing our discussion on the digestion of lipids. We're looking at steps D all the way to G.
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example
Digestion of Lipids Example 1
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So in this example, question, it says which of the following is incorrect about lipid digestion and absorption. A tag hydrolysis products are emulsified by bile acids and absorbed into intestinal cells. That's true. Remember in step D, we have emulsification and absorption. We have our hydrolysis products that were created in step C. And we're going to say since they're being emulsified, bile acids have to be in play and they, yes, they're absorbed into the intestinal cells here, mono glycerol and fatty acids are reassembled into tags inside the intestinal cells. That is true. That is the next step. Once we have these mono sele glycerol here that are entering in the intestinal cells, we have them being reassembled into T tags inside the intestinal cells are packaged into Chyle microns and then transported outside. That is true. Once they've been reassembled into tags, they get packaged into Chyle Micros which are then shipped off into the bloodstream, they can then go towards energy production or for storage. The last statement inside the small intestine emulsified tags are absorbed directly into the bloodstream. No, remember unlike carbohydrates, tags are not directly absorbed into the bloodstream following hydrolysis. So that was the first thing we talked about when it comes to the continued discussion of the digestion of lipids from steps D to G. So this statement here is the incorrect one. So our final answer would have to be option D.
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Problem
Problem
Which of the following outlines the overall process of digestion?