Histology Practical Study Guide
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Transcript of Histology Practical Study Guide
![Page 1: Histology Practical Study Guide](https://reader036.fdocuments.in/reader036/viewer/2022082614/55cf8e45550346703b905db1/html5/thumbnails/1.jpg)
Simple squamous epithelium Location here (What is this organ?)
Name the cavities in this view that are lined by this epitheliumGeneral function of this epithelium
Name two other locations where this epithelium could be found
LungAlveolusRapid diffusion of gases + transport of substances through membraneInner lining of heart & blood vessels, serous membranes of stomach, intestines
Simple cuboidal epitheliumLocation here (What is this organ?)
Name one other location this type could be foundList two specific functions of this epithelium
3 types of active transport that could be included in this epithelium's function
KidneyLiver, thyroid, bronchiolesSecretion, absorption (and reabsorption)Uniport, antiport, symport
Simple columnar epithelium, non-ciliatedName three possible locations this epithelium could be found
Two functions of this epithelium:What is the opaque, lighter appearing cell in this epithelium?
How is the apical surface of this epithelium modified (name and function)What type of protein is incorporated in the above structure?
Stomach, small intestine, large intestine, gallbladder, uterusAbsorption of nutrients, secretion of enzymes & mucusGoblet cellsMicrovilli (brush border) - helps increase surface areaMicrofilaments (actin)
Pseudostratified epitheliumName two possible locations this epithelium could be found
Structures at apical surface of this epitheliumType of protein incorporated in the above structures.
Two functions of this epitheliumHow can this be distinguished from other simple epithelium
Trachea, nasal cavity, epididymis, male urethraCiliaTubulinSecretes mucus, propels mucusNuclei appear at different levels and not in a row
TransitionalIs this epithelium simple or stratified?
List two possible locations this epithelium could be foundFunction of this epithelium
Type of junctions between cells and function of these junctionsHow can this be distinguished from other multilayered epithelia?
Stratifiedbladder, ureters, and part of umbilical cordPermits distension(stretches to allow shape change as in filling of bladder)Tight junction, to be waterproof.Cells can change shape (layers of round cells > very thin layers)
Histology Practical Study Guide 1
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Stratified squamous epithelium, non-keratinizedName two possible locations for the epithelium shown here.
Type of membrane at base of all epitheliumFunction of this epithelium
Is this epithelium water tight? How do you know?
Mouth, tongue, oral mucosa, anal cavity, vaginaBasement membraneResists abrasion and resists penetration from pathogenic organismsNo, no layer of keratinized cells
Stratified squamous epithelium, keratinizedBottom layer of cells in the epithelium
What cellular junction accounts for the spiny looking cells in the second layer?Protein that makes this epithelium water tight?
Clear area between living and dead cellsTop layer of dead cellsLast layer of living cells
Pigment cells in bottom layerName of the individual cells in this epithelium
Stratum basaleDesmosomesKeratinStratum lucidumStratum corneumStratum granulosumMelanocytesKeratinocytes
Simple columnar epithelium, ciliatedName a location where this could be found
Specific function of this epitheliumGeneral term for a cavity or opening against the apical surface
Fallopian tubeSweeping movement of oocyteLumen
MesenchymeType of protein fibers in this tissueFunction of this connective tissue.
Name the three embryonic germ layers
Reticular fibers & collagenGives rise to all other connective tissueMesoderm, endoderm, ectoderm
Areolar or loose connective tissueMain cell type
Two types of protein found in this tissueFunction of this tissue
Two locations this tissue could be found
FibroblastElastic and collagenLoose Binding. Holds nerves and blood vessels in placeSubcutaneous layers and fascia between muscles
AdiposeType of cell
Name two locations this tissue could be foundTwo functions of this tissue
AdipocyteSubcutaneous fat, breasts, heart surfaceEnergy storage, thermal insulation, protection for some organs
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Reticular connective tissueType of protein fibers
Function of this type of connective tissueCells that produce fibers
Name two locations this connective tissue could be found
Reticular fibersSupportive stroma (framework) for lymphatic organsReticular cellsLymph nodes, spleen, thymus, bone marrow
Dense regular connective tissueCell type
Type of protein in this connective tissueFunction of this tissue
Name two locations
FibroblastsCollagenProvides strong attachment points and gives high tensile strengthLigaments and tendons
Dense irregular connective tissueMajor protein
Cell typeLocation
General function of this connective tissue.
CollagenFibroblastsDeeper portion of dermisMulti-directional strength
Hyaline cartilageCell type
Term for material making up matrixFunction
Two locations this tissue could be found
ChondrocyteGround substanceNon rigid support. Eases joint movements, holds airway open for respiration, moves vocal chords for speechNose, ends of bones and movable joints, fetal skeleton
FibrocartilageHow is this distinguished from dense connective tissue?
Cell typeSignificant protein in matrix
FunctionCavities the cells are located in
Two locations this tissue could be found
Have round lacunae in the fibersChondrocyteCollagenWithstands high pressureLacunaeIntervertebral discs, knees
Elastic cartilageUnique protein to this connective tissueTwo locations this tissue could be found
Function
ElastinExternal ear, epiglottisFlexible support
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Bone (osseus tissue) Cell type
Cavities cells are located inDark area in center
Two structures found in the dark center areaTiny, crack-like lines radiating outward from center
Function of the above structuresGeneral function of this tissue
OsteocytesLacunaeHaversian canalBlood vessels and nervesCanaliculiDiffusion of nutrients and wasteRigid support, production of red blood cells, mineral storage
BloodMain cell type
Function of these cellsCells that pick up darker stain and are fewer in number
General function of these darker staining cells
ErythrocyteTransportation (of nutrients, wastes, gases, chemical signals, heat)LeukocytesDefense and immunity against infection and other pathogens
Skeletal Muscle Location this tissue could be found
Voluntary or involuntaryMultinucleate or uninucleate?
Around boneVoluntaryMultinucleate
Cardiac MuscleLocation of tissue
Name the structure separating individual cellsName the two types of junctions in the above structure
Voluntary or involuntary?Multinucleate or uninucleate?
HeartIntercalated disksGap junction and desmosomesInvoluntaryUninucleate
Smooth MuscleName the type of junction between cells
Voluntary or involuntary?Multinucleate or uninucleate?
Gap junctionInvoluntaryUninucleate
Nerve TissueSpecific cell type
Function of this cell typeExtensions of cell that conduct impulses into soma
Extensions of cell that conduct impulses away from soma
Multi-polar neuronConducts impulses, internal communicationDendriteAxon
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