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SGU SVM Histology Digestive 1

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hpaul2's version from 2016-11-11 18:19

Lips/cheeks

Question Answer
Lips are covered externally by ____ & internally by _____integument / mucosa
Describe the area near the muco-cutaneous junctionno hair follicles, thicker epidermis
In what species is the mucosa keratinizedruminants and horses
What type of glands are labial glands and where are they foundserous or seromucous; propria submucosa
What makes up the tunica muscularis of the lipsskeletal muscle fibers & orbicularis oris m.
What muscles is found in the middle layer of the cheeksbuccinators muscle
What is located on the mucosa of the cheeks in ruminantsconical buccal papillae
What type of glands are the buccal glands and where are they locatedserous, mucous, or seromucous; propria-submucosa
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Palates

Question Answer
What are the transverse ridges of the hard palate calledrugae
What is unique about the mucosa of the hard palate in ruminantsthe ker. str. sq. epi is thicker
What makes up the propria-submucousa of the hard palatecapillaries and collagen & reticular fibers
What type of clands are the palatine glands and where are they locatedmucous or seromucous; caudal hard palate
What does the dental pad consist ofheavily keratinized str. sq. epi. & dense irregular CT
In what species is the str. sq. epi. of the soft palate keratinizedhorse & ruminant
What types of glands are found in the propria-submucousa of the soft palatebranched, tubuloacinar, mucous or seromucous palatine glands
What four structures can be found in the soft palatepalatine glands, lymphatic tissues, palatine tonsils, palatine muscles
What species have palatine tonsilspigs & horses
Describe the palatine muscleslongitudinal skeletal muscle fibers
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Tongue

Question Answer
Describe the epithelium of the tonguestr. sq.epi – dorsally keratinized, ventrally nonkeritinized
What structures in the mucosa of the tongue aid in thermoregulationabundant capillaries & arteriovenous anastomoses
Describe the intrinsic lingual musclebundles of skeletal muscles- transverse, longitudinal, & perpendicular
What type of glands are the lingual glands and where are they locatedseromucous, between muscle fibers
What lie on the dorsal surface of the tongue and what is their functionlingual papillae; mechanical or gustatory
Name the mechanical papillaefiliform, conical, lenticular
Name the gustatory papillaefungiform, vallate, foliate
Describe filiform papillaeslender, thread-like, keratinized, highly vascular
What are the species differences in filiform papillaewell developed in ruminats & cats, fine in horses
Describe conical lingual papillaelarge, not highly keratinized
Where are conical lingual papillae locateddog/cat/pig- root of tongue; ruminats- torus linguae
What is unique about conical lingual papillae in pigslymphatic tissue core
Describe lenticular papillaeflattened, keratinized, dense irregular CT core
Where are lenticular papillae foundtorus linguae of ruminants
Describe fungiform papillaemushroom-shaped, nonkeratinized, taste buds on upper surface, CT core w/ nerves & vessels
Describe the abundance of taste buds in fungiform papillae among specieshorse/cow- sparse; sheep/pig- numerous; carnivore/goat – abundant
Describe villate papillaelarge, flattened, lie in sulcus, nonkeratinized, taste buds on papillary side of sulcus, CT core w/ vessels & nerves
What structure do villate papillae containserous gustatory glands
Describe foliate papillaeparallel folds, nonkeratinized, tastebuds on the fold sides
Where are foliate papillae foundcaudo-lateral tongue margin
What is unique about foliate papillae in catsrudimentary & no taste buds
What type of cells make up taste budssustentacular, gustatory, & basal cells
Where does the taste bud begin and endfrom basement membrane to taste pore (epithelial surface)
What are taste receptorsnon-myelinated afferent nerve fibers
What makes up the lyssawhite adipose tissue, skeletal muscle, vessels/nerves, dense irregular CT capsule
In what species is the lyssa foundcarnivores
In what species is the torus lingue foundruminants
Where is the torus lingue foundcaudal dorsal surface
In what species is the dorsal lingual cartilage foundhorses
What makes up the dorsal lingual cartilagehyaline cartilage, skeletal muscle, white adipose tissue
Where is the dorsal lingual cartilage foundinside mid-doral of tongue
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Teeth

Question Answer
What are the four layers of the toothenamel, dentine, cementum, pulp cavity
What makes up the pulp cavitydental pulp, CT core, vessels & nerves
What is the makeup of enamel99% mineral, 1% organic
What mineral makes up enamelhydroxyapatite
What cells produce enamelameloblasts
What is the makeup of dentine70% mineral, 30% organic
What minerals make up dentinehydroxyapatite, carbonate, magnesium, flouride
What makes up the organic part of dentinecollagen fibrils & glycoproteins
What cells produce dentineodontoblasts
What lie in the lamellae of cementumcementoytes
What anchors the tooth in the alveolusperidontal ligament
What makes up the peridontal ligamentsharpey’s fibers (cemto-alveolar)
What are the two types of teeth and the difference between thembrachydont- short & cease to grow; hypsodont- longer & continue to grow
What are the parts of the brachydont toothcrown, neck, root
What are the coverings of the crown & root of brachydont teethcrown- enamel; root- cementum
What species have brachydont teethcarnivores & ruminant incisors
Hypsodont teeth do not have a ____ or ____crown or neck
What covers hypsodont teethboth cementum & enamel
What is the infundibulum of the hypsodont toothan enamel invagination (aka ‘central canal’)
What species have hypsodont teethruminant cheep teeth, horses, swine canines
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Salivary Glands

Question Answer
What are the major salivary glandsparotid, mandibular, sublingual, zygomatic
What are the minor salivary glandslabial, lingual, buccal, palatine, molar
What type of gland is the parotid and what type of secretions does it havecompound acinar gland; serous
What types of cells are found in the parotid glandpyramidal cells & myoepithelial cells
What are the types of ducts of the parotid glandintercalated, striated, interlobular
What epithelium lines the intercalated ductlow cuboidal
What epithelium lines the striated ductsimple columnar w/ striations
What epithelium lines the interlobular ductsimple columnar to stratified
What type of gland is the mandubular and what type of secretion does it havecompound tubuloacinar; seromucous
What are the ducts of the mandubular glandintercalated, striated, interlobular
What type of gland is the sublingual and what type of secretions does it havecompound tubuloacinar; seromucous
In what species is the sublingual gland not mixedcattle, sheep, pigs – mucous
What species also have serous acini in the sublingual glanddogs & cats
What species do not have prominent striated and intercalated sublingual ductscats & dogs
What epithelium lines the main sublingual ductstratified cuboidal
What type of gland are the zygomatic and molar, and what type of secretions do they havelong branched, tubuloacinar; mucous
What ducts are missing from the zygomatic salivary glandintercalated & striated
Where are the molar salivary gland locatedcommissure of lips into vestibule
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