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53 Cards in this Set
- Front
- Back
bounded by the lips anteriorly, cheeks internally and the labial or buccal surfaces of the lower and the upper teeth on the posterior |
Oral vestibule (vestibulum oris) |
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bounded by lingual surfaces of upper and lower teeth anteriorly and laterally hard and soft palate superiorly, and sublingual sulcus and the tongue inferiorly |
oral cavity proper (cavum oris proprium) |
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what are the para-oral tissues: |
lips cheeks hard and soft palate sublingual sulcus tongue tonsils salivary gland teeth and the supporting structures |
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it is muscular and largest single orga in the mouth located in the floor of cavity (anterior two thirds) and in the pharynx (posterior one thirds) |
tongue |
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it separates the anterior two thirds of the tongue from the base or posterior one third |
sulcus terminalis |
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it divides the anterior part of the tongue into lateral halves |
lingual septum |
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papillary part or oral part |
anterior two thirds |
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lymphatic section or pharyngeal part |
posterior one third |
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a small V-shaped groove located posterior to the row of vallate papillae |
terminal sulcus |
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it is located at the apex of V-shaped terminal sulcus |
foramen cecum |
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round or oval prominences found at the dorsl surface of the base |
lingual follicles |
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a small pit at the center of lingual follicles |
lingual crypt |
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the dorsal mucosa covering the anterior part is irregular because? |
because of the presence of evaginations and invaginations known as the lingual papillae |
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4 types of papillae: |
Filiform Fungiform Foliate Vallate |
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they are numerous fine, pointed, cone-shaped or club-shaped structures about 2.5mm long consisting of core of connective tissues |
filiform papillae |
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are mushroom-shaped or round reddish prominences about 1.9mm long with dom-shaped top and narrow base possessing one or more taste buds. These papillae are very vascular and that accounts for the reddish or intensed pink color |
fungiform papillae |
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are narrow mucosal folds bilaterally located along the posterior border of the body about 4 to 8 in number and bear taste buds. These papillae are well-developed. |
Folliate papillae |
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the largest lingual papillae about 1mm or more in height, 2.5mm or more in width and 8-10 in numbers. |
vallate (circumvallate) papillae |
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Secretions of _______ ______ gland glow into the sulcus and wash the soluble elements of foods that stimulates the taste buds |
Von Ebner |
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They are ovoid or barrel-shaped intraepithelial organs for taste perceptions |
taste buds |
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2 types of cells found in taste buds: |
taste cells sustentacular cells |
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a type of cell that are slender columnar dark staining cells and elongated nuclei, 4 to 20 in number per bud and possess stiff hair like processes projecting from the free surface into the taste pore |
taste cells |
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gustatory cells, neuroepithelial cells |
taste cells |
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these are the outer cells arranged like staves of barrel with ovoid or round hypohromatic nuclei |
sustentacular cells |
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supporting cells |
sustentacular cells |
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Intrinsic muscles of the tongue |
a. Vertical b. Transverse c. Longitudinal - superior (dorsal) - inferior (ventral) |
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extrinsic muscles of the tongue |
styloglossus hyoglossus genioglossus palataglossus |
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movements of the tongue are produced by ______ |
striated muscles |
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the blood supply of the tongue comes from ____ |
lingual artery |
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branches of lingual artery |
dorsal lingual (base) sublingual artery (lingual sulcus) deep lingual artery (ventral) |
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it receives blood from the dorsal lingual, sublingual and the deep lingual veins |
lingual vein |
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True or False. Tongue has plenty of lymphatic supply |
true |
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the 2 nerve supply of the tongue |
lingual nerve glossopharyngeal nerve |
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it innervates the apex and the body of the tongue |
lingual nerve |
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it innervates the base or posterior one third of the tongue |
glossopharyngeal nerve |
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3 types of nerve endings: |
a. intragemmal fibers (cellular constituents of the taste buds) b. intergemmal fibers (between taste buds) c. Perigemmal fibers ( invest the taste buds) |
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Masses of lymphoid tissue with the primary function or producing lymphocytes and has a role in immunization. these are four in number and forms a protective ring of Waldeyer along the buccopharyngeal junction. |
Tonsils |
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ovoid bilateral structures situated in the pharyngeal folds about 1 by 1/2 inch |
two palatine or faucial tonsils |
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found at the base of the tongue posterior to the vallate papillae. |
Lingual tonsils |
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How many lymphoid units that make up the lingual tonsils? |
35 to 90 lymphoid units |
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it is located on the median surface of the dorsal wall of tehe nasopharynx as longitudinal folds about 3cms long |
Pharyngeal tonsils (adenoids) |
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2 groups of salivary glands |
major(extrinsic) salivary glands minor(intrinsic) salivary glands |
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gland which has intermittent secretions |
Major or Extrinsic salivary gland |
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Types of major salivary glands: |
Parotid gland Submandibular gland Sublingual gland |
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Glands which disharge their secretions continuously. |
Minor (Intrinsic) salivary glands |
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Types of minor salivary glands: |
labial gland small buccal gland palatine gland anterior and posterior lingual gland Von Ebner's gland Glossopalatine gland |
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thread-like, pointed conical structures arranged in numerous rows parallel to the terminal sulcus |
Filiform papillae |
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Histologically made up of stratified squamous keratinized epithelium |
Filiform papillae |
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It is made up of stratified squamous cells |
Vallate (Circumvallate) papillae |
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An intrinsic muscle that runs from the dorsal to ventral tongue surface |
Vertical muscle |
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An intrinsic muscle that runs the width of the tongue |
Transverse muscle |
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an intrinsic muscle that runs the length of the tongue between the genioglossus and hyoglossus |
Inferior longitudinal muscle |
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an intrinsic muscle located immediately deep to the mucous membrane |
superior longitudinal |