Term
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Definition
| discrete organs that carry out mastication, solubilization, digestion, absorption, and excretion |
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Term
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Definition
| mucosa, submucosa, muscularis externa, adventitia or serosa |
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Term
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Definition
| epithelium, lamina propria, muscularis mucosae |
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Term
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Definition
| tall columnar cells comprised of stem cells, absorptive cells, and secretory cells |
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Term
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Definition
| stratified, squamous, non-keratinized |
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Term
| lamina propria (in mucosa) |
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Definition
highly cellular, reticular CT
highly vascularized
smooth muscle, T, B, plasma cells (IgA) |
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Term
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Definition
in mucosa
2 layers of SM
found in inner circular and outer longitudinal layer |
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Term
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Definition
dense, fibrous CT
elastic and collagen fibers
large vasculature
Meissner plexus |
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Term
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Definition
inner cicular (tight) and outer longitudinal (loose) helices of SM
skeletal m. in esopho and anal sphincter
Auerbch n. plexus |
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Term
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Definition
layers of loose CT and collagen or elastic fibers
covered with mesothelium |
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Term
| oral and pharyngeal mucosa |
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Definition
| only two true layers: epithelium and lamina propria |
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Term
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Definition
stratified squamous epithelium, kept moist by sero-mucous glands in LP
-from ectoderm
-thicker than epidermis
-migrating lymphocytes
-renewed every 1-2 weeks
-subject to mechanical abrasion where it keratinizes
-papillae
-taste buds |
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Term
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Definition
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Term
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Definition
| filiform, fungiform, circumvallate |
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Term
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Definition
make up 2/3 of ant. tongue
conical, pointed structures
sensory nerve endings |
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Term
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Definition
anterior tongue (mostly tip)
mushroom shaped
contain taste buds |
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Term
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Definition
largest
9-12 along sulcus terminalis
have crypts |
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Term
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Definition
primary organ of taste
made up of supporting and taste cells
continual loss and replacement
glands of von Ebner
located in crypts of CP |
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Term
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Definition
| hair on apical side of this cell is composed of intertwined long microvilli that function as sensory receptor |
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Term
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Definition
located in LP
secretion (lipase) washes out crypts to process new stimuli |
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Term
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Definition
CT below epithelium
rich in collagen fibers and lymphocytes
contain tubuloalveolar and mixed sero/mucous salivary glands |
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Term
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Definition
contains interwoven bundles of skeletal muscle
ventral: non-keratinized epithelium
dorsal: keratinized epithelium |
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Term
major salivary glands:
parotid
submandibular
sublingual |
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Definition
-provide saliva for lubrication
-secrete amylase, IgA, defensins etc
-compound tubuloalveolar
-divided into lobes and lobules |
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Term
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Definition
| serous, mucous, myoepithelial, intercalated ducts, striated ducts, interlobular ducts |
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Term
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Definition
in acini or demilunes
secrete: proteins, glycoproteins and amylase |
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Term
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Definition
in tubules
secrete mucous for lubrication |
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Term
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Definition
around intralobular ducts
contract to expel acinar secretions |
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Term
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Definition
between acini and striated ducts of parenchyma
conduct saliva, ions |
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Term
| striated ducts (intralobular) |
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Definition
between intercalated and interlobular ducts of parenchyma
conduct saliva
resorb Na+
secrete K+ |
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Term
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Definition
surround by CT of septa
conduct saliva |
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Term
| O-MALT (organized mucosa-associated lymphoid tissue) |
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Definition
"wet" lymphatic aggregates
-contain mucosal plasma cells that secrete IgA
-no Afferent lymphatics
-M cells |
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Term
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Definition
in Peyer's patches of Ileum (but also tonsils)
-antigen transcytosis
-pathogenic bacteria/viruses take ADVANTAGE |
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Term
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Definition
high doses of antigens in the oral cavity
allow us to eat and not have an inflammatory rxn |
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Term
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Definition
large, partially encapsulated, wet lymphoid tissue that encircle entrance to pharynx
-some efferent, but NO AFFERENT lymphatics |
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Term
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Definition
stratified squamous non-keratinized epithelium
penetrated by crypts |
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Term
| pharyngeal tonsils (adenoid) |
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Definition
projects from nasopharynx
covered by resp. epithelium
no crypts |
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Term
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Definition
base of tongue
stratified squamous non-keratinized epi
short crypt on each aggregate |
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