Digestive System | Summary
Ғылым және технология
www.sciencewithsusanna.com has diagrams, notes, and practice questions.
Quizlet Review Link: quizlet.com/_6hrm1f
The main organs of the digestive system include the mouth, the esophagus, the stomach, the small intestine, and the large intestine. The mouth softens the food into a bolus, which is moved, via peristalsis, down the esophagus and into the stomach. Three layers of muscle churn the food into a uniform mixture called chyme. Parietal cells form HCl, which activates the enzyme pepsin and begins protein digestion.
The small intestine is very long and has many folds called villi that increase surface area to increase efficiency of digestion and nutrient absorption). The three parts of the small intestine are the duodenum, the jejunum, and the ileum. The duodenum receives digestive enzymes from the pancreas and bile from the gall bladder. Most chemical digestion occurs in the duodenum, and much of the absorption as well. The jejunum and the ileum complete nutrient absorption.
The large intestine reabsorbs water from the forming feces and is home to thousands of species of microbes (that contribute to our health in a number of ways). The appendix is an immune organ that holds a reservoir of bacteria to repopulate the colon after diarrheal diseases (and probably has other functions as well). The large intestine also includes the ascending, transverse, descending, and sigmoid portions of the colon, and ends with the straight rectum.
Accessory organs include the salivary glands (parotid, sublingual, and submandibular), the liver (makes bile, stores glucose as glycogen, along with about 200 other functions!), the gall bladder (stores and concentrates bile), and the pancreas (makes digestive enzymes such as amylase, proteases, and lipases).
The intestinal wall has four layers: mucosa, submucosa, smooth muscle, and peritoneum.
Sugars and amino acids enter the hepatic portal vein and go to the liver for processing. Fats directly enter the lymphatic vessels and are dumped into the vena cava and go straight to the heart, which relies almost exclusively on fat for fuel.
Пікірлер: 224
I am 47 years old and in the process of preparing for the Teas test, and I thank God that I found you! Thank you for sharing your gift, and May God Bless you and your!
@susannaheinze
5 жыл бұрын
Good luck on your test!
@daisymonsalve1485
3 жыл бұрын
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@Josolynm
3 жыл бұрын
How was it ?
@veestu9308
Жыл бұрын
Tricia, did you complete nursing school?
@abduljabbarmohammed4188
Жыл бұрын
What is the tea test?
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Thank you so much, i watched it once, ran out to the newsagents to grab a sketch pad and bunch of pens and watched it again. The way you presented this really helped me to gain the understanding i needed. The only sad thing was my artistic abilities are very blah haha. thanks again so much im sure i will be watching at least some of your other videos.
We just started this system today in Anatomy & Physiology II. This video is very helpful.
You are a blessing! I admired your knowledge and the way you explain everything. Thank you so much!
Thank you so much Susanna!! I've learned so much from your diagrams and Quizlet!!
@chinalel
3 жыл бұрын
What is the name of the quizlet set?
Just when I have an exam on this! Thank you for your work, Susanna. I love your way of teaching and explaining.
@susannaheinze
5 жыл бұрын
I'm so glad the video helps your learning!
Wow!!! I wish i had found you sooner. This is soooo easy to understand. Currently studying for the teas. THANK YOU SOO MUCH!!
gosh thank you so much for this breakdown of the digestive system, your explanations, drawings and highlighting really nailed it down for me. i was having a hard time understanding this portion of the body but you went in order which made it much easier to understand!!
I just came across your page. This was a great explanation! Ive also been trying to find a good way to write my notes and make summaries so this helped a lot! I can’t wait to watch more of your other videos. Thank you!
@veronicaearl8651
2 жыл бұрын
Hi! I just came across your page and I love it. Great explanations and great notes, thank you!
You are the best in elaborating this system... I really appreciate
I just came across this video yesterday. I have been watching many other videos and taking pages of notes. I would like to thank you for this video, as it has made everything much easier to understand.
Really appreciate you. You do such a good job of putting it all together; it makes it much easier to understand.
Well explained and straight to the point. Thank you so much ❤️
Nicely representation of this system easily with main organs, accessory organs & key histology of gut ! Bolus & chyms , fatty acid through lymphatic drainage keep heart energized ! Lastly summarized all ! Thanks really giving this video !
This was so concise and easy to follow as a review, thanks!
Excellent and gifted teacher. Thank you for sharing your gift. Love it
Thank you so much It really helped with my anatomy class. God bless you!
Your videos are so helpful, thank you!!
You are a great teacher! Thanks for these.
More power to you 🙏🙏❤️. Thank you 🙏
You presentation is awesome. I came across it at the right time. I can’t thank you enough for all the illustrations make it easy to remember 🙏🙏🙏
I am currently studying for the NCLEX and you may have just saved me ;) The digestive system has been the more difficult one for me! You are a huge blessing in such a stressful time! Never stop teaching! Thank you and God Bless!
@akirakenchieedquiban531
Жыл бұрын
good luck po sana makapasa den po ako sa NCLEX AT BSN
Honestly this has helped so much. I'm preparing for a Nursing Interview and I planned on talking about the Digestive system. Coming across your explanation has made it easier for me to re learn the Digestive system and be able to make my own lecture. I'm so grateful for this
Thank you so much for such a great video, you explain everything in details. I keep repeating it. love it
This just summarized my three lectures meeeehn.Thanks you so much
This was an awesome presentation. Thank you very much.I hope to see more of your you tube videos.
Thank you so much for your videos!!! I got an 88 on my teas with just two weeks of studying and your videos were the most helpful. ❤️
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i am doing my gastrointestinal physiology text tomorrow but the truth is am in love with your summery and explanation. thanks
⭐️⭐️⭐️⭐️⭐️ 5 star presentation as always! Thanks so much!
@susannaheinze
5 жыл бұрын
And thanks to you for watching!
Thank you!! I’m about to take my TEAS this has helped a lot!❤️
Thank you so much for the great lecture
Thank you for sharing and thank you for your good explaining 🙏
Thank you for this video, really enjoyed it!
Agh Im taking I'm Teas Test tomorrow I'm so nervous, thank you for the info!!
@christopherg6335
3 жыл бұрын
How did you do?
@lesliefernandez5514
3 жыл бұрын
I totally passed, thanks for asking! I’m in week 2 of LPN school 🥳
@christopherg6335
3 жыл бұрын
@@lesliefernandez5514 yay! Congrats! May I ask if you used anything else to study science? I just feel like I don’t know what to study. I’m studying all the systems, genetics, some chemistry, and scientific reasoning. But I need more resources! Lol
@lesliefernandez5514
3 жыл бұрын
@@christopherg6335 So at my program they gave us a list of basic what to study, I learned all my systems except the integumentary system and that’s all I got questions on 🤣. A good resource that I used what the Teas mometrix book and I did practice questions on the internet. Mometrix also had videos online that teaches you. I have the book if you ever need it, I can send you some pics!
@christopherg6335
3 жыл бұрын
@@lesliefernandez5514 I actually have that book! It was a little confusing with math so I didn’t look at it much more but maybe it’s good for the science section. I’ll check it out. Along with the rest of these videos! Thankyou ☺️
So helpful, motivated me to study
Taking a digestive system test tomorrow and you were so so helpful thank you 🙏🏻🙏🏻🙏🏻
thank you. very helpful and educating important to know.
Thank you so much for taking the time out to do this you are the best
Thank you!
You nailed it lady , what an explanation man 🥰
Very nice explained really well i am studying surgicial technogy this video and others you presented are very informative
I always struggle with everything related to hormones and reproductive system... please we need more support to survive the teas test lol... thank you Iove the essy way you explain everything in details...
@susannaheinze
5 жыл бұрын
Thanks! I hope to make some reproductive system videos this quarter. :-)
Amazing video, it helps me a lot thank you!
Quizlet review link is amazing.
Susanna is God sent!!!!!!!
Love this breakdown. Great way to study for the TEAS in September. Thank You!
@lamaharb535
2 ай бұрын
Hey! Did you end up doing the teas? Did it go in depth? Is this video enough?
I have no words to thank you ❤️,, ❤️❤️
I’m studying for my TEAS test, and this video is VERY helpful. I love the way you explain and organize your information. Thank you!
@Ichi-9
2 жыл бұрын
Is this summary all you needed, or do you need something more for the Teas?
@Nhxn_
Жыл бұрын
@@Ichi-9 This is a good summary, and you'll probably score OKAY but not great, but some answers involve a bit more depth, so supplementing with a textbook helps also.
@Ichi-9
Жыл бұрын
@@Nhxn_ thanks, I passed the teas a year ago 🎉
@Nhxn_
Жыл бұрын
@@Ichi-9 congrats haha 😄 what did u end up scoring?
I am not a science student , Had interest to learn how digestive system works. This is the best video i found in youtube which explained so beautifully ❤ Subscribed your channel.
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You are a gifted teacher
Awesome. Thank you
nice one... the markers are life!
Thank you so much,I appreciate.
awesome explanation. I came here for my Assesment :D thank you so much
Have enjoyed ,I thought the digestive system was completed but after watching this video I see it to be the simplest system thanks 🙏😊
Thankyou, explained very assiduously.
Fantastic...!!! Thank you..!!
wow what a smooth explanation!!! thank you so much dear ma'am ❤️🙏
I wish I'd known about your videos a lot sooner. Found them tonight and I take my TEAS test tomorrow. Thank you for all your videos!!
@danielamelendez847
3 жыл бұрын
how did it go?
thank you for your great explaintion and fantastic vedio maker
Who would dislike this video? It’s awesome thank you 💐
@imanobody3666
2 жыл бұрын
Information is incorrect for the small intestine. That is why. Overall good video, and plenty of miss information.
excellent explanation by SussannaHeinze. I suggest all to watch those interested
Hello, thank you so much for the comprehensive video it's really easy to understand and recall and has help me shown up with good grade thank you so much
I mmuch appreciate your videos!
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Thanks a lot!!!👏👏👏👍 it is well explained👍
Really great work mam...crystal clear explanation....
Thank you so much. really helpfull on my A&Pll
Glad I found you! So helpful
@nnennauko8073
4 жыл бұрын
Thank you so much for this video.
Awesome video thanks a lot
Thank you so much this video was so helpful 🤗💞
THANK YOU FOR THIS WONDERFUL GIFT>
@TABUTE1
3 жыл бұрын
Lovely
Can you do a video on phenotypes and genotypes, and on Punnet squares, please? Love your videos!!!
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Are these key points for the teas test ?
Thank you so much
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Thank you ❤
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Amazing thank you! 222
Life saving ❤️
Are those protease from pancreas named as chymotripsine & tripsin ?
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the link to the quizlet isn't working via youtube or your website.
What kind of pen are you using at 15:49