Histology Of SubMandibular Gland /Mixed Salivary Gland | Salivary Gland
Вставка
- Опубліковано 27 вер 2020
- Salivary glands are made up of secretory acini (acini - means a rounded secretory unit) and ducts. There are two types of secretions - serous and mucous. The acini can either be serous, mucous, or a mixture of serous and mucous.
A serous acinus secretes proteins in an isotonic watery fluid.
A mucous acinuss secretes secretes mucin - lubricant
In a mixed serous-mucous acinus, the serous acinus forms a serous demilune around mucous acinus, as shown in the diagram.
The secretory units merge into intercalated ducts, which are lined by simple low cuboidal epithelium, and surrounded by myoepithelial cells.
These ducts continue on as striated ducts. These have a folded basal membrane, to enable active transport of substances out of the duct. Water resorption, and ion secretion takes place in the striated ducts, to make saliva hypotonic (reduced Na,Cl ions and increased carbonate, and potassium ions).
The striated ducts lead into interlobular (excretory) ducts, lined with a tall columnar epithelium.
The glands are divided into lobules by connective tissue septa. Each lobule contains numerous secretory units, or acini.
Sublingual glands have mainly mucous acini.
Parotid glands have mainly serous acini.
Submandibular glands have a mixture of mucous and serous acini.
Mucous acini stain more weakly than serous acini, because of the techniques used to produce the sections.
Huge respect to the women behind the camera
That means alotttt , thank you 😊
U r so hard working I know it's so difficult to draw such large diagrams , heading s and explaining u deserve more subscribers all the best ❤️❤️
Thank you so much.....😊 Means alot..
Keep supporting.
Please give me notes of. 5 marks , histology of mixed salivery gland
Crystal clear. Thankyou
You're welcome 😊
Wow, nice explanation.
Thank you 😊
Tq mam this vedio is really help full❤❤🥰
The clinical consideration is specific for this gland or in general for salivary glands
Best explanation
Thank you 😊
Super explanation 🔥
Thank you 😊
Awesome diagrams and explanation mam...mam plz make video on physiology lung compliance
Thank you, will be uploading this week 😊
@@Dr.KareemaTabassum thank you mam 🙏🙏🙏... waiting for the video
ua-cam.com/video/gkCfw5ApO74/v-deo.html
ua-cam.com/video/gkCfw5ApO74/v-deo.html
@@Dr.KareemaTabassum 🙏🙏🙏🙏
nice explanation.thank you ❤ but background sound is disturbing
,❤️
drive.google.com/file/d/18eehoG_8cp2Tp8TDSvGATv2dyqkRMs3a/view?usp=drivesdk
@@Dr.KareemaTabassum ❤️