 Hello everyone, welcome back to another session in dentistry and more so we are continuing our celebrity gland session So this session is about anatomy of various Celebrity glands so we learned the major celebrity glands parotid gland Submaxillary gland or submantibular gland and sublingual gland and we have also minor Celebrity glands, so I'll start with the parotid gland parotid gland got its name from two words that is para and Autic para means around Autic is Here, so it is a gland which is present around the ear. That is how it got this name parotid gland Which is the largest Celebrity gland And it is purely Serious in nature that is its secretion can be serious mucus or mixed so it is purely serious in nature it weighs around 15 grams It's superficial portion of the gland lies in front of the external ear can see the picture here The superficial portion of the gland lies in front of the external ear and it's deeper part filling the retromolar fossa So the structure that is arteries veins nerves which are present in and around Parotid gland there are many arteries many veins are now is present Artaries are external carotid artery maxillary artery superficial temporal artery and Pository auricular artery as you see here in picture Whereas veins the retromantibular vein is formed within the gland by union of Two veins one is superficial temporal and maxillary vein And the nerve as we all know the facial nerve enters the gland and divides into Terminal branches within the gland so that is why when we give In fear a alveolar nerve block by accident if we give Before touching the bone and if we inject the solution into parotid gland there will be temporary Facial paralysis because parotid gland has Facial nerve branches, so it temporary paralyzes the Nerve and the why it's supply area. So one side will be affected. That is a temporary effect So that is a facial now which is present within the parotid gland, okay? Next we have parotid duct which is known as Tencent's duct, okay? It crosses the muscle which muscle masseter muscle and pierces the Buxinator to open at a position that is a papilla at Bacchal mucosa opposite to maxillary second molar so Tencent's duct or parotid duct which is opens opposite to maxillary second molar So this deck measures around four to six millimeter in length and five millimeter in diameter almost a square shaped a Small portion of parotid Accompanize duct forming accessory gland Now what is a blade supply? blade supply is mainly by the external carotid artery and Venus drainage to external jugular vein The lymphatic drainage the lymph drains into parotid nodes And from there to upper deep cervical lymph nodes deep cervical lymph node So first it goes to parotid then goes to upper deep cervical lymph nodes Now it's about the nerve supply nerve supply we have parasympathetic fibers So this picture will give you an idea parasympathetic fibers First one is a secreto Retro motor that is parasympathetic Which has pre ganglionic fibers that is from inferior salivatory nucleus It goes to 9th nerve which relay in OT ganglion then the post ganglionic fibers Which is from the auriculotemporal nerve and to the gland so as you see you picture here pre ganglionic fibers and the post ganglionic fibers finally the Glant parotid gland. So we have OT ganglion here inferior salivatory ganglion here So this is a pre ganglionic and post ganglionic fiber Whereas the sympathetic nerves are Vasa motor and are derived from plexus around the external carotid artery and sensory nerves comes from Orchillotemporal So we have secreto motor that is parasympathetic fibers and sympathetic nerves and sensory nerves that is the nerve supply Now let's move on to the submantibular gland Submantibular gland. They are the second largest. Okay after parotid. They are the second largest gland also called as Submaxillary Glants So it is a mixed type of gland which has both serous and mucus, but Serous is predominating than mucus It is a mixed salivary gland Parotid is purely serous So it's superficial part so the picture here is a superficial part this Fills the digastric triangle whereas a deeper part it is deep to mylohyoid and superficial to hyoglossus and Styloglossus. Okay, so it is deep to mylohyoid and superficial to Hyoglossus and Styloglossus muscle So it's superficial part falls into digastric triangle Next about the submantibular Dect, which is known as Wattens dect Dect so the parotid dect is known as Stensens dect, so this is Wattens dect So this runs forward above the mylohyoid muscle lying just below the mucosa and floor of the mouth can see here So it opens on sublingual papilla which is also called as Carincula sublingualis Okay Carincula sublingualis which is lateral to the lingual Freenam, so this is here and it's let's play from by the facial artery Venus drainage to common facial or lingual vein. Okay, let's play that is facial artery then Venus drainage to common facial vein or lingual vein and the lymphatic drainage to deep cervical and jugular jugular nodes Okay Similarly, we have the nerve supply first one is a secretor motor that is begins near the superior salivatory nucleus Then the preganglionic fibers which pass through the sensory root of facial nerve That is a geniculate ganglion then corda timpani then the lingual nerve to reach Submanipular ganglion after that post ganglionic fibers emerge from the ganglion and enters a submandibular gland So you can see here the lingual nerve Submanipular ganglion Then we can see the geniculate ganglion So that is pre ganglionic fibers then comes a post ganglionic fibers So we have two ganglion here geniculate ganglion and submandibular ganglion Now let's move to the third one that is Sublingual gland. Okay, so we learned parotid gland and submandibular gland now we have Sublingual gland which is the smallest one which is the smallest among three It lies between the floor of the mouth below the mucosa and Ebo myelohydrate muscle can see here So it is a mixed gland, but mucous is predominant and Submanipular which is a vice versa cirrus is predominant than mucous Okay, so which is known as decks of Rivinus which is actually Compilation there are small decks which aggregates to form that is why it is known as decks of Rivinus. Okay Not a single deck. There is a group of deck. So decks of Rivinus Which open independently along sublingual fold which is opening near the submandibular deck The blood supply is by the sublingual and submental arteries Sublingual and Submental arteries that is blood supply Whereas a lymphatic drainage which is to submandibular lymph nodes Submandibular lymph nodes. So that is the blood supply and Lymphatic drainage. Okay, so this is the third one sublingual gland So that's all for now. We finish the anatomy of salivary glands, parotid gland, submandibular gland and finally the sublingual gland So next session is about the various cells. We have cirrus cells, mucous cells and various types of decks that is we have intercalated decks and striated deck and The excretory decks. So all will be dealt in next session. Okay, so I'll come up with that session That is a part 3 of salivary gland Hope you understood this Anatomy of three major salivary glands. Okay. Thank you