Oral Mucosa - Keratinized & Non-Keratinized Epithelium Simplified!!!!
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- Опубликовано: 2 авг 2024
- The term mucous membrane refers to the moist lining of the gastrointestinal tract or the GIT. It lines the oral and nasal cavities, to the esophagus, stomach, and the intestines.
This mucous membrane in the oral cavity is termed oral mucosa.
The classification of oral mucosa is based on their location and functions, the differences in their histologic features, and the presence or absence of keratinization.
Oral mucosa is classified into three types and these three types are the masticatory mucosa, the lining mucosa, and the specialized mucosa. The masticatory mucosa is located in areas that bear a high amount of functional or masticatory loads like the gingiva, and the hard palate. Lining mucosa lines the cheeks, the lips, and the floor of the mouth. And the specialized mucosa as the name suggests is located on special areas responsible for one of our special senses that is, the sense of taste. Hence the specialized mucosa is located on our tongue. The masticatory and specialized mucosa is keratinized whereas the lining mucosa is non-keratinized.
The two main components of the oral mucosa are the superficial oral epithelium and an underlying connective tissue called the lamina propria. The superficial layer is made up of stratified squamous epithelium. It’s irregular in shape and this irregularity in shape creates finger-like projections of the oral epithelium embedded in underlying connective tissue or lamina propria. These finger-like projections of superficial epithelium are termed epithelial rete ridges. The upward projections of the lamina propria or the connective tissue in the oral epithelium are termed connective tissue papilla. Lamina propria supports and nourishes the superficial layer of the avascular epithelium. The superficial layer of the oral epithelium is separated from the underlying lamina propria through a thin layer of basement membrane known as the basal lamina. Below the oral mucosa or underneath the lamina propria lies the submucosa. This layer of submucosa is occupied by major blood vessels and nerves, the minor salivary glands, and some adipose or fat tissue. This layer of submucosa is absent in the hard palate and gingiva so that a firm attachment of mucosa is provided at these sites.
Video (diagrams+editing) & Voiceover:
Dr.Maryam Kazman
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Hey Dentalmaniaks!
This video took me a little bit longer to upload as I was extremely busy with my daily schedule. I hope you all are happy to have this video here. please do let me know about your thoughts on this video in the comment section below :)
Besides I apologize for the mistake I did here, the orthokeratinized epithelium actually have no nuclei.
Thankyou each and everyone for watching!
check out the playlist on oral histology and embryology here: ruclips.net/video/SBkGnzgVoFI/видео.html
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what an amzing lecture, Thank you very much
One of the best videos on oral mucosa on RUclips and your drawings 🙌🙌🙌 continue the good work🙌
Thanks a lot for your feedback 🥰
Please keep sharing the channel
The last half of the presentation is excellent ! How wonderfully the topic has been simplified ❤
Thanks dear :)
Thank you so much for this you really helped me!!!! I always recommend your videos to all my classmates!!!
Thank you so much 🙏🥰
Been following all your videos mam and I cannot thank you enough❤
Thank you !🙏🥰
Thank you DentalManiaK, I have been an oral surgeon for 18 years and I have never understood the difference between keratinized mucosa and nonkeratinized mucosa. I will definitely bring this knowledge into my field of work and think about this before my procedure this afternoon.
Thankyou for the feedback :)
Extremely helpful , thank you ❤
Pleasure :)
Thanks for the feedback 🥰🙏
Nice explanation
Plz make more videos.. Your presentation is exceptional and easy to catch..
Thanks a lot
Thanks for watching them :)
Please keep sharing these videos ahead.
i am biggest fan of you.specially your art.MashaAllah kamaaaal
thankyou so much!
Best❤💯
nice maam....khosh raho...love from pakistan the patan
Thank u so such mam this lecture is really helpful to me n all dental students
I am glad to know that 😇
Thanks Dr..
My pleasure 😇
wonderful presentation
Thanks 😊
great work
Thanks 😊
Ma'am.your lectures are soo helpful
Thanks for watching :)
Very helpful video.... Can you share notes of this video so we can remember the information?
Ma'am,
Thank you so much for uploading this video.❤️
This will surely help students understand the basic concepts easily.
Thank you for putting in so much of efforts.
I really love and appreciate how magically you convert difficult concepts into something as easy and beautiful informative video as this one.❤️❤️❤️
Sending warm wishes along your way.🌸
Stay Blessed:)
Stay Safe 👍
Thank you so much twinkle for taking time and writing this heartfelt comment to me. ❤️😇
@@DentalManiaK
Ma'am,
I must say you are a tremendous teacher, we all are so blessed to have this opportunity to learn from you.
And certainly you deserve much more appreciation.❤️
May the almighty bless you infinitely with more of good health,happiness and success.
I always keep you in my prayers.❤️
Warm Regards 🌸
Stay Blessed:)
Stay Safe 👍
Now and always ❤️
Its really very helpful ☺
Thanks please keep sharing 🥰
ډيره زياته مننه قلم مو تاند اوسه ډير زبردست concepts ورکوي زه ستا دغه لیکچر کراچۍ پاکستان کې ګورم وياړم چې يوه افغاني دومره پوهه ښودلې سئ .!❤️
ډیره مننه!
هیله ده چینل له دوستانو سره شریک کړی!
Tasu hum bds kawai ? Kam zay na ? Or was stasu kam year start de ?
I would like to know does non keratoncyte cells such as Melanocytes, Merkel Cells, Langerhans Cells and Inflammatory cells get renewed constantly with the surface tissue of lining mucosa ? Thank you
Thank you so much, but the text "Oral and Maxillofacial Pathology by Brad W Neville" states that "With parakeratin, there is no granular cell layer and the epithelial nuclei are retained in the keratin layer. With orthokeratin, the epithelium demonstrates a granular cell layer, and the nuclei are lost in the keratin layer." Can you clarify?
Mam plzz make video on adenomas ....it will be grateful 🙏
Sure 🙂
Please give useful video on gingiva
Development of gingiva
Superb mam👍
What's mucogingival?
4:35 Keratinized epithelium
orthokeratin- doesn't retain nuclei- it disappears?. can you please confirm... iam confused..thanks
Ur the only person who ask this question. Yes ur correct nuclei disappears.
Mam please ndo exam maxillary molar and mandibular molar Anatomy
Video on maxilary first molar will be uploaded soon!
am sry, so much content to grasp.,kindly make the content relevant to the topic with short time which helps in retaining it .thank you
8:03 you mean non-keratinized
Yes.. my apologies…!
@@DentalManiaK Thanks
d.d
thanks for the great video! U have mentioned that in orthokeratinization the superficial cellular clays retain their nuclei but in parakeratinization the nuclei become shrunken and hypnotic. However, according to my little knowledge and to what I can see in some websites, in the orthokeratinization, there is no nuclei. I am a little bit confused bcz I trust u! it would be great to reassure me :) @DentalManiak
Thanks for the comment and please accept my apology for the mistake I made here :)
You are right! In Orthokeratinized epithelium there is no nuclei.