Table of Contents:
Digestive system anatomy and physiology | Digestive system lecture 1
Video taken from the channel: Shomu’s Biology
BIO160 Preview Video Lecture 23 Digestive System
Video taken from the channel: Physiology & Anatomy Videos
Fasted State
Video taken from the channel: Armando Hasudungan
Hormones of the Digestive System
Video taken from the channel: Anatomy Academy
Fed State
Video taken from the channel: Armando Hasudungan
REGULATION OF FOOD INTAKE BY HYPOTHALAMUS PHYSIOLOGY…LEPTIN RECEPTOR AND OBESITY….
Video taken from the channel: STUDY MEDICINE ASH TUTORIALS
Human Physiology Regulation of Food Intake
Video taken from the channel: Janux
Hunger Hormones Ghrelin.. A hormone produced by the stomach and small intestine when your stomach is empty. Adiponectin.. A hormone secreted by fat cells in your body. Cholecystokinin.. This hormone is produced in the small intestine during and after a meal. Peptide YY.. Made.
Leptin is a hormone, made by fat cells, that decreases your appetite. Ghrelin is a hormone that increases appetite, and also plays a role in body weight. Levels of leptin the appetite suppressor.
Digestive hormones Gastrin, Secretin, cholecystokinin, Gastric Inhibitory Peptide and Motilin; it helps and regulates the human digestive process.What are Digestion Hormones? Digestive hormones (gut hormones) are chemical ‘messengers’ which signal the gastrointestinal tract and accessory organs to perform different actions in order to coordinate the digestive process.
It may act on an entire organ, part of the organ or specific tissues and cells to.Once food enters your stomach, hormones help break down the food. According to the U.S. Department of Health and Human Services, the main hormones that control digestion are gastrin, secretin, and cholecystokinin (CCK). They are produced and released by cells in the mucus linings of the stomach and small intestine.
Stress management is key. There’s more! Cortisol. Cortisol, “the stress hormone,” is also thought to impact our appetite. This hormone is release during times of fasting (including dieting and food restriction!!), food ingestion, exercising, and at times when one is under psychosocial stress.
Ghrelin is made in the stomach. It stimulates hunger by entering the brain and acting on the neurons in the hypothalamus to increase the activity of.In fact, abnormally high levels of ghrelin can make and keep you “hangry” all the time. As a result, you tend to consume more food and calories, and gain weight in the process.To lose weight and to control appetite, you need to control ghrelin levels.
In this post, we will explore 15 ways to control hunger hormone ghrelin to lose weight.secretin: A peptide hormone secreted by the duodenum that serves to regulate its acidity. There are five main hormones that aid in regulation of the digestive system in mammals. There are variations across the vertebrates, such as birds, so arrangements are complex and additional details are.
On the other side, unhealthy foods such as high glycemic foods, sugar, and alcohol can negatively impact your hormones, so it’s essential only to eat these foods in moderation. [Also Read: How to Manage Hunger Hormones] Foods That Regulate Hormones. Here’s how to balance hormones through diet, try eating these 9 foods. 1. Avocado.Leptin and ghrelin are two hunger hormones that play a significant role in your body’s energy balance.
Leptin is a hormone produced by fat cells. High levels of this hormone decrease your appetite. Typically, thinner people will have lower levels of leptin, and heavier people will have higher levels.
There are several hormones that help regulate hunger cues. With diabetes, abnormal levels and functioning of these hormones can develop. For example, amylin is a hormone that helps lower blood glucose levels.
Yet, diabetes destroys the beta cells in the pancreas that makes amylin.People tend to blame their “insatiable appetite” for their weight gain and also for their inability to lose weight, but there’s a “culprit” you can tie this constant feeling of hunger to – it’s the hormone “ghrelin.” Human body needs nourishment to survive and this nourishment comes from the food we eat which gets converted.During the gastric phase, the hormone gastrin is secreted by G cells in the stomach in response to the presence of proteins. Gastrin stimulates the release of stomach acid, or hydrochloric acid (HCl) which aids in the digestion of the proteins.
During the gastric phase, the hormone gastrin is secreted by G cells in the stomach in response to the presence of proteins. Gastrin stimulates the release of stomach acid, or hydrochloric acid (HCl) which aids in the digestion of the proteins.
List of related literature:
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| from Essentials of Cardiopulmonary Physical Therapy E-Book | |
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| from Endocrinology of Physical Activity and Sport | |
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| from Physiology of Sport and Exercise | |
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| from Williams Textbook of Endocrinology E-Book | |
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| from Medical Phisiology: Principles for Clinical Medicine | |
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| from Handbook of Behavior, Food and Nutrition | |
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| from Essentials of Anatomy and Physiology | |
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| from Medical Genetics | |
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| from Chronic Care Nursing | |
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| from Introduction to Human Nutrition |
93 comments
These videos are really helpful, you really make it easier to visualize when studying. Thanks a ton. I also want to know which subjects you are studying.
3.57 that’s sounds familiar lol nice presentation id like to see a video done on protein synthesis and ketosis
Your style is too good..
Plzz Sr.. Keep uploading yor new vedios. Very much knowledgeable..
Thank u so much for this video
But I think there is a small mistake correct me if I’m wrong the AgRP is an orexigenic neurotransmetor not anorexigenic
Armando, very good video! Intuitive, organized and very well displayed! Thanks a lot!!!
fantastic yet again. can you please do a video on mitosis v meiosis?
You make it sound like no one goes into catabolisys (protein breakdown) UNTIL ketones are no longer in sufficient supply… Is that true?
That marker moving fast is so very annoying that I don’t think I could resist to the end of presentation. But I will give it a try because I’m interested in the subject. If you can please do this without that marker to be seen. You will win time and we could watch. Thank you.
Protein break down doesn’t have to come from the muscles, but just any protein likeblood vessels that were supplying excess fat. That’s why people who lost a lot of weight not only by dieting, but also fasting don’t have soggy skin afterwards. During the fast we see the increase in growth hormone that helps building the muscles.
Love the video, btw!
Doesn’t make sense you said heart prefers fatty acids as energy source so why would it use ketones that derive from fatty acids in liver? Heart can use fatty acids directly.
Realise this is quite an old video but in case anyone can help won’t the chylomicrons bypass the liver?
You said muscle doesn’t break down until many weeks of starvation. However I understand from 24-72 hours of fasting, muscle is being broken down until ketogenesis takes over. An adaptation to spare muscle.
I cant undesrtand something:if ghrelin is been produced when the stomach is empty,and the stomach empties after 3 to 4 hours,thus we feel hungry at that time. So does that mean the the food hangs out in the stomach all this time then we feel hungry again but simultaneously the food goes to the small intestine. But in the small intestine horomones of satiety are been produces……that does not make any sense…. thanks
Hi,I am so glad to watch your video on this feed fast cycle…Can you please make a video about the feed fast cycle for diabetes mellitus type 1 and type 2? Thank you sooooo much!
Iam ur fan armando…
U r the reason why iam scoring in med school
Armando, great video. Have been long time watching videos on metabolism and not really understanding the whole picture. You explain so much with such clarity in just 8 min. Great, thanks a lot
now I understood what teacher in school was teaching me 5 years ago lmao btw school sucks meh xD This video was super informative really thanks:)
HI,
I am wondering something. I take caffein before a workout to give me some energy. I know that caffein has several effects on the brain (increase adrenaline, dopamine), and it increases the lipolysis. My question is when people get used to caffein the effect on the brain stimulation is not as strong as before but I wonder if the lipolysis effect will remain as high as at the beginning or if the lipolysis is related to the brain stimulation which would mean that if the brain effect decrease the lipolysis will decrease?
Thank you very much!
Once again… great stuff… thank you very much… you are so talented!:-)
7:25 ant.
also holy crap THANK YOUU for all of your vids (especially ETC/oxidative phosphorylation one)
Wow just studied this, and this video was PERFECT summary and explanation.
maybe it’s beyond the scope of this video, but i would like to add 2 things
important is to know that glucagon has no effect whatsoever on muscles, but it stimulates an enzyme called hormone sensitive lipase (HSL) in adipose tissue which provides glycerol and fatty acids from triglycerols (and of course all the other things you mentioned)
proteolysis of muscle tissue is induced by cortisol
Good lecture please more lecture upload to getting knowledge
I believe that oxaloacetate is used as an actual substrate in gluconeogenesis rather than an energy source for it, as said in the video, right?
thank you for presenting so many topics in (pun intended) digestible form
The science help is great but honestly I can’t get over how amazing the drawings and handwriting is
I do a Ketogenic diet 3 times a year which helps me loose some weight and resets my energy levels. I go zero carbs for 2 weeks then very low carb (diary only) for the last 2 weeks and keep my blood ketones between 1.1 and 1.7mmol/L for optimum weight loss. I maintain a balanced diet with exercise when im not on Keto. Honestly the best results I’ve ever seen!
Wow this is so useful and easy to understand. Loved it!!
Thank u so much!!
At the 7min mark (and in the the khan video, ‘How does the body adapt to starvation’) it’s mentioned that during the first day or so, most fatty acids (aceytl coa) enter the kreb cycle to produce ATP, but that prolonged fasting will cause NADH levels to rise and cause a switch to make ketone bodies from the excess aceytl-coa… but if FAAs enters the kreb cycle to produce ATP, isn’t this glucogensis?
Also if you consume exogenous ketones (ex. mct oil, red raspberries, etc), in an otherwise normal (non-carb restrictive) diet, what would be the brain’s glucose vs ketone utilization?
Are there any genetic component or polymorphisms that would make the liver less capable of producing endogenous ketones from excess acetyl-coa?
Is it widely accepted that diseases of the brain (alzheimer’s, parkinson’s, huntington’s, etc) are likely the result of insulin resistance of the brain? And therefore ketone therapy may be helpful?
I have a question in regards of being fed. We do know that blood glucose rises and reach its pick levels 1-2 hours after taking a meal. So is it good to eat in that time window when your insulin is in highest numbers or is it bad?
It’s funny to see how medical doctors interchange words “fasting” and “starvation”. When you fast, you “eat” it is AUTOPHAGY. Starvation starts when there’s nothing left! And it takes time. A lot of people, famous, or not, have fasted over 40 days: the Buddha, Jesus, Pythagoras… They did not starve.
Besides, Thanks Armando, your videos are great.
I fasted straight for 10 days and lost a bit of leg muscle. So that explains why. Also for 3 months i water fasted 16 hours everyday and had 3 workouts a week in fasted state. Before all these i had high bad choloresterol, high liver enzymes and high triglycerides. They are all gone.
The other YouTube narrators were either too lazy to explain fasting’s physiology in detail or too airheaded to do it… or both.
dude your amazing……first video i ever watched of yours..and im hooked, idk how you do the drawings so smooth. but bravo!!! heard of you through Kamal Patel from Examine.com
Last week I had a lecture on metabolism at my medical school and I was so frustrated halfway through the lecture that I stopped listening then I went on youtube and saw your simplification of metabolism and it clicked! You made it soooo much easier to understand
Hello! How does the insulin affects the absorption of glucose?
If the body doesn’t break down muscle for awhile then where is it getting the amino acids to convert to glucose? Your fasted so it’s not coming from dietary protien…
Hey Armando, I learn so much from your videos. What textbook do you reference for your physiology videos? I ask because it seems like you have a very good grasp of the concepts because you can explain things in your own words clearly. Thanks!
Bravo‼️ man, that was an awesome video.. You explained everything to the “T”. I literally have no questions because you answered all of them in that video.. thank you very much ������
Was just revising this topic. Now I have this video to help me out:) Thanks!
Thank u so much sir for ur all video.. ur all videos are awesome…
These videos are really helpful, you really make it easier to visualize when studying. Thanks a ton. I also want to know which subjects you are studying.
How long does it take for the glycogen in the liver to turn back into glucose? Does it depend on people or what we ate at our last meal?
would be very nice at the end of the video to get the whole drawing in the shot for screen cap purposes to study. Thanks
3:28 hm if I remember correctly glycerol or any part of triacylglycerols dont have part in gluconeogenesis. The breakdown of fatty acids makes acyl coA which powers the Krebs cycle, but the 2 carbons from acyl coa are lost in the Krebs cycle, as 2 CO2. Therefore the viewers should be careful about saying fatty acids enter gluconeogenesis. You could say that acyl coa (product of fatty acids) help power the Krebs cycle which eventually leads to gluconeogenesis, but anything else would be wrong in my opinion.
Amino acids however will enter the Krebs cycle at various intermediate steps and become oxaloacetat which enters the gluconeogenesis at phosphoenylpyrovate, AAs are also able to convert into the first step, pyrovate itself.
My name is prakash kumar sharma,mai to sara video dekha to sem v,vi pass out huwa.
It was good but…
Speed is very fast….. I had to pause video to understand the concept…..
Excellent presentation
Wish I had a copy of your notes. So clear, concise and easy to understand. Thank you
great video man!!!
but quick question, with all this going on, why does one usually feel very tired/ sleepy after eating then?
Isnt glycolysis occurring which means energy?
Really amazing
Idk why it is so underrated
Even People with tons of failed to explain it all
And you just ��������
Great job with the white board explanation of fasted state effects.
Really great!
Your information is wrong. Not all of it, but better preparation is needed before presenting.
MCH (melanin-concentrating hormone) is actually an orexigenic, MSH is the anoxerigenic (melanocyte stimulating hormone) and CART stands for Cocaine Amphetamine regulated transcript, not caffeine amphetamine related hormone.
Good lecture please more lecture upload to getting knowledge
Hey! Very nice video. I love your work and am pleased to see it becoming better with time. I even borrowed your brain drawing for my profile, hope you don’t mind!
However I’m currently reviewing this topic at med school, and I was told proteinolysis can be, in fact, one of the first mechanisms to occur during absolute starvation. Your fat storages are actually saved for later it seems, I think this happens when you have an extra stress acting upon your body. This is especially important when considering parenteral nutrition in unawake obese patients in an intensive care unit. If you don’t supply adequate daily nutrition, they will enter a catabolic state culminating in enough protein loss to impair respiratory muscle function. One would think that, having enough fat in their bodies, they would just burn it all up, but it seems our body hold a firm grasp on that.
If you would like, I can search for a reference and link it here.
Thank you a lots……………………………………………………………………………………………………
You really need to revisit this subject and do some more studying.
You forgot to mention the increase Human Growth Hormone during fasting, as an method the intelligent body used, to protect the important tissue “muscle, skin, organs, etc.” from being burned for energy. If you deplete all your fat, then you are entering in a danger zone and even so, the body will begin to burn the damaged proteins first like tumors, cancer bodies, damaged cell even before touching the good ones. But overall, nice explanation and illustrations, thanks!
Wish she made more videos, she is so great at teaching and easy to understand
THANK YOU VERY VERY MUCH IT DOES HELP ME ALOT!!!!! ms. beautiful
your videos are amazing armando!
thank you
<3 from east side of London
He makes all of this make sense! This is by far the BEST example of how fasting works in the body.
love it,
at 7:03 Acetly CoA do not covert back to pyruvate and then again in to storage form because there is lake of enzyme specifically Insulin.
thank you for what you are doing. keep going.
Hey, you said that the Pancreas detects the decrease in Blood glucose levels, how do they do this??
Watching your videos all the way from Mexico! Great content, but could you please scan your notes and share the link? Would be very helpful!
4 years later and your vids are still super helpful. I fully understand this shit lol THANK YOU, You’re God sent!!
This is very good, but I just couldn’t help but got distracted by her pronunciations, satiety? Duodenum? Anyhow, still very good.
Thanks a lot ma’am…. This video will give me 10 marks in my physio exam….. Thanks a lot maam
Overall it was a good video but it has some sound issues, your voice sir is so low that i literally put my hand free’s deep into my ear to watch the full video ��❤️
Appreciate Video! Excuse me for the intrusion, I would appreciate your initial thoughts. Have you tried Dinanlinson Amazing Look Approach (Have a quick look on google cant remember the place now)? It is a smashing exclusive product for learning how to quickly lose weight without the headache. Ive heard some great things about it and my old buddy Taylor after a lifetime of fighting got excellent success with it.
We were made for feast and famine. There is too much food available…so we need to create our own famine. So a good fast is maybe a good cure for many ailments in our society!!!
Thank you Armando, i have shared your link with my group for an essay on this topic
Excellent videos man thank you. You should have printable versions of your amazing drawings, just a thought!
Dude! You have just saved me from being kicked out from Pharmacy School! Your lectures are well explained, detailed, captivating, and yet fun to watch. YOU ROCK!!!! love the the drawings as well. THANK YOU VERY MUCH!!!
Thank you so much sir your video’s help out to clear the concept with simply manner for me thank you sir
The pace at which u described everything in this video was perfect man, great drawing, great explanation, great job!:D
thank you your description is the best I have seen so far just what I needed.:)
Wouldnt AA entering the liver from proteins in the muscle also be converted into acetyl coa then ketones for ATP production? Gluconeogenic vs Ketogenic AA types (Leu, Lys).
Couldn’t someone create the effects of th fasted state while still eating however avoiding carbohydrates consumption?
You sir are a god send, you have helped me so much with biochem, think ive learnt more from you than all of my lectures and in a fraction of the time.
Hello Armando, as a health coach in Amsterdam, your videos are excellent stuff for me to learn and understand the processes my cliënts getting through during their treatments. THANKS a MILLION and keep serving us/ humankind with these great information.
My humble request to you….
Can you make a video about the way our lymphatic system works, why it is very important, and the role of our lymphatic fluid comparing to our (blood)plasma.
Am sure you ‘ll be able to get us something excellent agin.
Thank you!!!!! You made biochemistry so easily understandable!
It’s also v.imp to note that glucose enters liver via the GLUT-2 transporter, whereas enters muscle and adipose via GLUT-4 transporters!
here i would like to mention two things, 1:46 insulin secrete with help of 2 mechanism one you mentioned is parasympathetic stimulation as well as b-cell of pancreas scenes glucose via fenestrated capillaries and glucose attach with receptor on b-cell and it releases insulin.
second i have question 3:41 that what mechanism deiced that some of glucose will directly store in to adipose tissue bypassing liver.
thank you.
i love all your videos keep doing it.
Since glucagon forces the break of triglycerides, could injecting glucagon be a treatment for obesity?
Thank you so much. For visual learners like me its more than perfect!! Do you have a starving state? I can’t find it!
http://ajitvadakayil.blogspot.com/2016/10/amavasya-poornima-ekadashi-fasting.html?m=1
Could you please make a video about how long term fasting affects the digestive and lymphatic systems?
Wow, good information and presentation. You’re pretty good at drawing/writing too which helps!
Yes your lecture on dna replication was a… Brilliant thing for me.. I literally scored very good in mol bio. Thanks to you!!
thanks, just now,i understand,you are amazing in explain the subject.thanks again.
Thank you soo much sir…. plz sir ek video comparative physiology of digestion topic pr bhi agar ho sake to plz sir….
Those Free Fatty Acids that enter the liver after prolonged fasting, do they damage that organ?
sir pls inform me any physics subject channel for net tutorials