Difference between revisions of "Salivary Glands Overview - Anatomy & Physiology"
Jump to navigation
Jump to search
Fiorecastro (talk | contribs) |
|||
| (17 intermediate revisions by 8 users not shown) | |||
| Line 1: | Line 1: | ||
| + | {{OpenPagesTop}} | ||
==Introduction== | ==Introduction== | ||
| + | [[File:Salivary glands.jpg|500px|right|thumb|Dog salivary glands]] | ||
| + | The [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]] is drained by numerous salivary glands. The saliva secreted keeps the mouth moist and facilitates [[Mastication|mastication]] by lubricating the passage of the bolus. | ||
| − | + | Salivary glands are present in the [[Cheeks|cheek]], [[Tongue - Anatomy & Physiology|tongue]], [[Lips|lips]], [[Oesophagus - Anatomy & Physiology|oesophagus]], [[Soft Palate|soft palate]] and [[Pharynx - Anatomy & Physiology|pharynx]] but the major salivary glands are located further away from the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]] and function through connective ducts. | |
| − | + | Saliva provides digestive enzymes, is a route of excretion of substances which accumulate on the [[:Category:Teeth - Anatomy & Physiology|teeth]] and provides lubricative and also cleansing functions. Salivary glands can produce a [[Serous Salivary Gland - Anatomy & Physiology|serous]] secretion, a [[Mucous Salivary Gland - Anatomy & Physiology|mucous]] secretion or both. | |
| − | + | ==Types of Salivary Glands== | |
| − | |||
| − | |||
| − | |||
| − | |||
===Major Salivary Glands=== | ===Major Salivary Glands=== | ||
| − | |||
| − | + | [[Parotid Gland - Anatomy & Physiology|Parotid]] (glandula parotis), [[Mandibular Gland - Anatomy & Physiology|Mandibular]] (glandula mandibularis), [[Sublingual Gland - Anatomy & Physiology|Sublingual]] (glandula sublinguales) and [[Zygomatic Gland - Anatomy & Physiology|Zygomatic]] (glandula zygomatica). | |
| − | |||
| − | |||
| − | |||
| − | |||
===Minor Salivary Glands=== | ===Minor Salivary Glands=== | ||
| − | + | [[Labial Gland - Anatomy & Physiology|Labial]], [[Lingual Gland - Anatomy & Physiology|Lingual]], [[Buccal Gland - Anatomy & Physiology|Buccal]] and [[Palatine Gland - Anatomy & Physiology|Palatine]]. | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
==Innervation== | ==Innervation== | ||
| − | + | The salivary glands are innervated by '''sympathetic'''- Vasoconstriction occurs and the flow of saliva is decreased. | |
| − | |||
| − | |||
| − | + | The salivary glands are also innervated by '''parasympathetic''' (most important)- They travel from the brainstem by the facial ([[Cranial Nerves - Anatomy & Physiology|CN VII]]) and glossopharyngeal ([[Cranial Nerves - Anatomy & Physiology|CN IX]]) then into branches of the trigeminal nerve ([[Cranial Nerves - Anatomy & Physiology|CN V]]). The flow of salivary fluid increases and vasodilation occurs. | |
| − | |||
| − | |||
| − | |||
| − | + | The main nerves are the '''occulomotor''' ([[Cranial Nerves - Anatomy & Physiology|CN III]]), '''facial''' ([[Cranial Nerves - Anatomy & Physiology|CN VII]]), '''glossopharyngeal''' ([[Cranial Nerves - Anatomy & Physiology|CN IX]]) and '''vagus''' ([[Cranial Nerves - Anatomy & Physiology|CN X]]). | |
==Saliva== | ==Saliva== | ||
| − | + | Saliva is mainly water and contains amylase for carbohydrate digestion, salt- mainly sodium bicarbonate, mucin, electrolytes, antimicrobial agents and lingual lipase. | |
| − | + | ==Species Differences== | |
| − | + | [[Image:Salivary Glands of Different Species.jpg|thumb|right|250px|Salivary Glands of cow, horse, pig and dog - Copyright prof. Pat Mccarthy]] | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
===Equine=== | ===Equine=== | ||
| − | + | Produce up to 40L per day. | |
===Bovine=== | ===Bovine=== | ||
| − | + | Produce 110-180L per day. | |
===Porcine=== | ===Porcine=== | ||
| − | + | Produce up to 15L per day. | |
| − | |||
| − | |||
| − | |||
| − | |||
==Links== | ==Links== | ||
| − | [[:Category:Salivary Glands - Pathology|Salivary Glands Pathology]] | + | '''Click here for information on [[:Category:Salivary Glands - Pathology|Salivary Glands Pathology]]''' |
| + | {{Template:Learning | ||
| + | |flashcards= [[Salivary Gland Anatomy & Physiology Flashcards]] | ||
| + | |powerpoints= [[Oral Cavity Histology resource|Oral Cavity Histology, see part 2 for salivary glands]] | ||
| + | |dragster = [[Oral Cavity Histology Resource (II)|Salivary Glands Histology Activity]] | ||
| + | |videos = [[Video: Lateral surface of the head of the dog potcast|Lateral surface of the head of the dog potcast]]<br>[[Video: Lateral surface and sagittal section of the head of a sheep|Lateral surface and sagittal section of the head of a sheep]]<br>[[Video: Lateral surface of the head of the dog potcast 4|Lateral surface of the head of the dog potcast 4]]<br>[[Video: Lateral surface of the head of the dog potcast 6|Lateral surface of the head of the dog potcast 6]] | ||
| + | |Vetstream = [https://www.vetstream.com/canis/search?s=salivary Salivary Gland diseases] | ||
| + | }} | ||
| + | ==Webinars== | ||
| + | <rss max="10" highlight="none">https://www.thewebinarvet.com/gastroenterology-and-nutrition/webinars/feed</rss> | ||
[[Category:Salivary Glands - Anatomy & Physiology]] | [[Category:Salivary Glands - Anatomy & Physiology]] | ||
| − | [[Category: | + | [[Category:A&P Done]] |
Latest revision as of 16:58, 7 November 2022
Introduction
The oral cavity is drained by numerous salivary glands. The saliva secreted keeps the mouth moist and facilitates mastication by lubricating the passage of the bolus.
Salivary glands are present in the cheek, tongue, lips, oesophagus, soft palate and pharynx but the major salivary glands are located further away from the oral cavity and function through connective ducts.
Saliva provides digestive enzymes, is a route of excretion of substances which accumulate on the teeth and provides lubricative and also cleansing functions. Salivary glands can produce a serous secretion, a mucous secretion or both.
Types of Salivary Glands
Major Salivary Glands
Parotid (glandula parotis), Mandibular (glandula mandibularis), Sublingual (glandula sublinguales) and Zygomatic (glandula zygomatica).
Minor Salivary Glands
Labial, Lingual, Buccal and Palatine.
Innervation
The salivary glands are innervated by sympathetic- Vasoconstriction occurs and the flow of saliva is decreased.
The salivary glands are also innervated by parasympathetic (most important)- They travel from the brainstem by the facial (CN VII) and glossopharyngeal (CN IX) then into branches of the trigeminal nerve (CN V). The flow of salivary fluid increases and vasodilation occurs.
The main nerves are the occulomotor (CN III), facial (CN VII), glossopharyngeal (CN IX) and vagus (CN X).
Saliva
Saliva is mainly water and contains amylase for carbohydrate digestion, salt- mainly sodium bicarbonate, mucin, electrolytes, antimicrobial agents and lingual lipase.
Species Differences
Equine
Produce up to 40L per day.
Bovine
Produce 110-180L per day.
Porcine
Produce up to 15L per day.
Links
Click here for information on Salivary Glands Pathology
| Salivary Glands Overview - Anatomy & Physiology Learning Resources | |
|---|---|
 To reach the Vetstream content, please select |
Canis, Felis, Lapis or Equis |
 Test your knowledge using drag and drop boxes |
Salivary Glands Histology Activity |
 Test your knowledge using flashcard type questions |
Salivary Gland Anatomy & Physiology Flashcards |
 Selection of relevant videos |
Lateral surface of the head of the dog potcast Lateral surface and sagittal section of the head of a sheep Lateral surface of the head of the dog potcast 4 Lateral surface of the head of the dog potcast 6 |
 Selection of relevant PowerPoint tutorials |
Oral Cavity Histology, see part 2 for salivary glands |
Webinars
Failed to load RSS feed from https://www.thewebinarvet.com/gastroenterology-and-nutrition/webinars/feed: Error parsing XML for RSS