|
|
| (One intermediate revision by the same user not shown) |
| Line 1: |
Line 1: |
| − | ==Introduction==
| + | #REDIRECT[[:Category:Salivary Glands - Anatomy & Physiology]] |
| − | | |
| − | 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 gands are present in the [[Cheeks|cheek]], [[Oral Cavity - 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 and Physiology|serous]] secretion, a [[Mucous Salivary Gland - Anatomy & Physiology|mucous]] secretion or both.
| |
| − | | |
| − | ==Types of Salivary Glands==
| |
| − | [[Image:Parotid & Mandibular Salivary Gland.jpg|thumb|right|150px|Parotid & Mandibular Salivary Gland - Copyright Nottingham 2008]]
| |
| − | ===Major Salivary Glands===
| |
| − | *[[Parotid Gland - Anatomy & Physiology|Parotid]] (glandula parotis)
| |
| − | | |
| − | *[[Mandibular Gland - Anatomy & Physiology|Mandibular]] (glandula mandibularis)
| |
| − | | |
| − | *[[Sublingual Gland - Anatomy & Physiology|Sublingual]] (glandula sublinguales)
| |
| − | | |
| − | *[[Zygomatic Gland - Anatomy & Physiology|Zygomatic]] (glandula zygomatica)
| |
| − | | |
| − | ===Minor Salivary Glands===
| |
| − | | |
| − | *[[Labial Gland - Anatomy & Physiology|Labial]]
| |
| − | | |
| − | *[[Lingual Gland - Anatomy & Physiology|Lingual]]
| |
| − | | |
| − | *[[Buccal Gland - Anatomy & Physiology|Buccal]]
| |
| − | | |
| − | *[[Palatine Gland - Anatomy & Physiology|Palatine]]
| |
| − | | |
| − | [[Image:Salivary Glands Dog.jpg|thumb|right|150px|Salivary Glands Labelled (Dog) - Copyright C.Clarkson and T.F.Fletcher University of Minnesota]]
| |
| − | | |
| − | ==Innervation==
| |
| − | | |
| − | *Sympathetic
| |
| − | **Vasoconstriction occurs
| |
| − | **Flow of saliva is decreased
| |
| − | | |
| − | *Parasympathetic (most important)
| |
| − | **Travel from the brainstem by the facial ([[Cranial Nerves - Anatomy & Physiology|CN VII]]) and glossopharyngeal ([[Cranial Nerves - Anatomy & Physiology|CN XI]]) then into branches of the trigeminal nerve ([[Cranial Nerves - Anatomy & Physiology|CN V]])
| |
| − | **Flow of salivary fluid increases
| |
| − | **Vasodilation occurs
| |
| − | | |
| − | *Main nerves are 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==
| |
| − | | |
| − | *Mainly water
| |
| − | | |
| − | *Amylase for carbohydrate digestion
| |
| − | | |
| − | *Salt- mainly sodium bicarbonate
| |
| − | | |
| − | *Mucin
| |
| − | | |
| − | *Electrolytes
| |
| − | | |
| − | *Antimicrobial agents
| |
| − | | |
| − | *Lingual lipase
| |
| − | | |
| − | | |
| − | ==Species Differences==
| |
| − | [[Image:Salivary Glands of Different Species.jpg|thumb|right|150px|Salivary Glands of cow, horse, pig and dog - Copyright prof. Pat Mccarthy]]
| |
| − | ===Equine===
| |
| − | *Produce up to 40L per day
| |
| − | | |
| − | ===Bovine===
| |
| − | *Produce 110-180L per day
| |
| − | | |
| − | ===Porcine===
| |
| − | *Produce up tp 15L per day
| |
| − | | |
| − | ==Test yourself with the Salivary Glands flashcards==
| |
| − | | |
| − | [[Oral Cavity - Anatomy & Physiology - Flashcards#Salivary Glands Flashcards|Salivary Glands Flashcards]]
| |
| − | | |
| − | ==Links==
| |
| − | | |
| − | [[:Category:Salivary Glands - Pathology|Salivary Glands Pathology]] | |
| − | | |
| − | | |
| − | [[Category:Oral Cavity - Anatomy & Physiology]]
| |