Flashcards in Tooth, Tongue, Salivary Glands Deck (43):
Teeth are composed of internal soft tissue called _____ and 3 calcified tissues: _____ and ____ which make the surface layer and ____, which lies between the surface layer and internal soft tissue
Calcified dental tissues are made of _____ _____
Teeth have an enamel covered ____, a cementum covered _____, and a ____ (where the 2 surface materials meet).
Enamel consists of a highly calcified matrix of 2 fibrous high molecular weight glycoproteins called _____ and ____
____ is acellular after tooth eruption and cannot repair itself.
Note it is the hardest substance in the body
_____ makes up the bulk of the tooth and surrounds the central pulp chamber and root (pulp) Canal
Dentin has a calcified matrix containing _____ fibers and is manufactured by ______, which continuously produce dentin
Odontoblasts are located at the periphery of the ____ and send cytoplasmic extensions (odontoblastic processes) into tunnel-like spaces called dentinal _____ within dentin
The cementum is a collagen containing calcifed matrix produced by _____
_____ are in the apical region of the cementum and are located within lacunae. They send processes within canaliculi towards the peridontal ligament.
the coronal region of the cementum has no cementocytes
_____ continuously produce cementum after tooth eruption to compensate for decrease in tooth length that results from enamel abrasion
Dental ____ is a gelatinous connective tissue with odontoblasts in its peripheral layer (closest to dentin). It also contains mesenchymal cells and thin collagen fibers.
Dental ____ is richly vascularized and innervated by sympathetic fibers. All sensations from this structure are interpreted as ____ in the CNS
The _____ ligament is the dental supporting structure and consists of ____ irregular connective tissue located between the root cementum and bony alveolus.
Collagen fibers in the peridontal ligament are arranged in ____ ____ bundles that extend from the cementum to bone and suspends the tooth in its ___
Gingivae is covered by stratified squamous partially keratinized (called _______) to keratinized epethlium.
_____ has dense irregular CT that is arranged in 5 principal fiber bundles. It attaches to enamel surface via hemidesmosomes.
The peridontal ligament attaches to the _____ _____ ______.
alveolar bone proper
Alveolar bone consists of an inner layer (______ ______) and an outer layer (______ _____) of compact bone with an intervening layer of cancellous/trabecular bone called _____.
The tongue is divided into an anterior 2/3 and a posterior 1/3 by the _____ ____ which is a V shaped depression. The posteriorly pointing apex ends in a shallow pit called the ____ ____
On the dorsal surface, the tongue is covered by ______ to keratinized stratified squamous epithelium. On the ventral surface it is covered by stratified squamous ______ epithelium. Both surfaces have a ____ _____ and _____ of dense irregular collagenous CT
The muscular ____ forms the bulk of lingual tissue.
it has muscle tissue in 3 directions
Lingual papillae are located on the ____ surface of the anterior 2/3 of the tongue.
____ papillae are short, narrow, highly keratinized pointed structures that project above the tongue surface
____ papillae are mushroom-shaped and project above the tongue surface. They are interspersed among the ____ papillae and occasionally have taste buds
____ papillae are shallow longitudinal furrows located on the tongue lateral aspect
____ papillae are large and circular, with each one surrounded by a moat like furrow. There are 10-15 in number and are distributed in a V pattern, just anterior to the _____ _____
Taste buds sit in the furrow of ______ and _____ papillae
___ ____ are intraepithelial sensory organs, each consisting of 60-80 spindle shaped cells
There are 4 different taste bud cell types. Type 1 is: ____. Type 2 is ____. Type 3 is _____. Type 4 is ____
What is the proposed life cycle/relationship of the cell types? Basal-->____-->____-->_____
Salty and sour tastes are due to specific _____ ______ in cells
bitter and sweet are due to specific _____ _____
Receptors called ______ detect bitter substances
_____ is our "savory" taste and detects the carboxylate ion on ______ _____.
Lingual salivary glands deliver ____ secretions into the furrow surrounding each papilla, assisting the taste buds in perceiving stimuli
Glands are von Ebner secrete into the groove by the _____ papillae. The serous fluid is filled with _____
The three paired exocrine salivary glands are: _____, ____, and _____
Parotid secretions are _____, submandibular glands are _____, while sublingual secretions are mainly ____
serous and mucous
What do glands secrete? 4 things:
secretory component for IgA
What type of glands are salivary glands?
Salivary acini consist of serous and mucous cells arranged around a central lumen that connects to an ______ duct. This duct leads to a striated _____ duct. These ducts lead to a ____ duct.