Histology MCQs/Epithelial Tissue



{Assume classification of epithelia according to the morphology. Which type of epithelium is epithelium of endocrine gland? - In all cases, endocrine gland are composed of the trabecular epithelium - In all cases, endocrine gland are composed of the planar epithelium - Approximately half of exocrine gland is composed of trabecular epithelium and the rest is composed of the planar epithelium + Usually trabecular; the exception is the thyroid gland which is composed of the planar epithelium
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{Which strucute is associated with the basal body? - Basal annealing - Microvillus - Villus + Cilium
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{Which structure forms the brush border? (i.e., "Of which structures is composed the brush borde?") - Secretory granules - Basal anealing + Microvilli - Cilia
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{Which type of the epithelium are cells which are main site of gas exchange (type I pneumocytes)? - Pseudostratified columnar epithelium - Simple cuboidal epithelium + Simple squamous epithelium - Reticular epithelium
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{Which is embryonic origin of epithelial tissues? - Three germ layers, neural tube or neural crests - Three germ layers or neural crests - Three germ layers or neural tube + Three germ layers only
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{Imagine resorptive epithelium. Which type of epithelium is it (usually) according to the morphological classification (to the structure)? - Pseudostratified columnar epithelium - Stratified columnar epithelium + Simple columnar epithelium - Simple squamous epithelium
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{Imagine stratified columnar epithelium. Are there some cells of roughly cubic shape in this epithelium? - Yes, they are in the intermediate layer (layer between basal and superficial layers) - Yes, they are dissipated among cells of the outermost layer + Yes, they are in the basal layer - No, they are not present
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{Which are main addhesive proteins of desmosmes? - E-cadherin and catenin complex + Desmoglein and desmocollins - Claudins and occludins - Integrins
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{Which are main addhesive proteins of tight junctions? - E-cadherin and catenin complex - Desmoglein and desmocollins + Claudins and occludins - Integrins
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{Which are main addhesive proteins of zonulae addherentes? + E-cadherin and catenin complex - Desmoglein and desmocollins - Claudins and occludins - Integrins
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{Which staining is most appropriate for mucus (product of mucinous cells)? - Masson's trichrome + Alcian blue - Anilin blue - Orcein
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{Only one statement about the stratified squamous epithelium is correct. Which one? + Cells of the outermost layer, i.e. layer farthest from the basement membrane, are squamous (flat) - Cells of the outermost layer, i.e. layer farthest from the basement membrane, are polygonal (polyhedral) - Cells of the innermost layer, i.e. layer closest to the basement membrane, are squamous (flat) - Cells of the innermost layer, i.e. layer closest to the basement membrane, are polygonal (polyhedral)
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{Which staining highlights secretory granules of mucous cells the best? - Heidenheins iron hematoxylin - Feulgen's reaction + PAS reaction - AZAN
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{How are called sensory cells (receptors) of epithelial origin? - Primary sensory cells + Secondary sensory cells - Tertiary sensory cells - Quaternary sensory cells
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{The most commonn type of secretion of exocrine cells is: - All possible types of secretion are roughly equally frequent + Merocrine secretion - Holocrine secretion - Apocrine secretion
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{How to describe product of serous glands? - It is of high viscosity because it is rich on polysacharides - It is of low viscosity because it is rich on polysacharides - It is of high viscosity because it is rich on proteins + It is of low viscosity and rich on proteins
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{What does in meat that the exocrine gland is branched? - Several secretory parts are connected to one duct; these duct connect to bigger and bigger duct, the biggest duct opens to the surface - Only one secretory part is connected to one duct; these duct connect to bigger and bigger duct, the biggest duct opens to the surface - Secretory part opens directly to the surface, or it is connected with the surface by the short duct only + Several secretory parts are connected to one short duct; this duct opens to the surface
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{What does in meat that the exocrine gland is composed? - Several secretory parts are connected to one duct; these duct connect to bigger and bigger duct, the biggest duct opens to the surface + Only one secretory part is connected to one duct; these duct connect to bigger and bigger duct, the biggest duct opens to the surface - Secretory part opens directly to the surface, or it is connected with the surface by the short duct only - Several secretory parts are connected to one short duct; this duct opens to the surface
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{Which statement describes a holocrine secretory cell the best? - Holocrine secretory cell is an endocrine cell of which apical part is fulfilled by its own product. Main secretion is based on releasing of apical part of the cell and its subsequent decay. - Holocrine secretory cell is an exocrine cell of which apical part is fulfilled by its own product. Main secretion is based on releasing of apical part of the cell and its subsequent decay. - Holocrine secretory cell is an endocrine cell which is fulfilled by its own product. Main secretion is based on releasing of whole cell and its subsequent decay. + Holocrine secretory cell is an exocrine cell which is fulfilled by its own product. Main secretion is based on releasing of whole cell and its subsequent decay.
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{Where are usually myoepithelial cells? + In secretory part of glands between secretory cells and the basement membrane - In secretory part of glands as the layer which is closest to the lumen - In secretory part of glands dissipated among secretory cells - In secretory part of glands out of the basement membrane
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{Which organ contains stratified squamous epithelium with keratinization? - Mucosa of oral cavity - Oesophagus - Larynx + Skin
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{In which organ do we have serous acini? - Inside the exocrine pancreas because exocrine pancreas produces viscous and chemically inert mucus - Inside the exocrine pancreas because exocrine pancreas produces insuline and glucagon + Inside the exocrine pancreas because exocrine pancreas produces plenty of enzymes - Inside the exocrine pancreas because exocrine pancreas produces fatty sebaceum
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{Which description of germinal epithelium is the most accurate? - Germinal epithelium secure appropriate environment for development of oocytes + Germinal epithelium secure appropriate environment for development of sperms - Germinal epithelium is source of new sperms - Germinal epithelium is source of new oocytes
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{Which gland uses holocrine type of secretion? - Sublingual salivary gland - Parotid salivary gland + Skin sebaceous gland - Skin sweat gland
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{Which of following statements is the best description of gap junction (nexus)? - Cell addhesion involved mainly in a barrier avoid free diffusion along epithelial cells + Cell addhesion involved mainly in exchange of small molecules and ions between cells - Cell addhesion involved mainly in anchoring the cell to the basement membrane - Cell addhesion involved mainly in mechanical stability and resistance
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{Which of following statements is the best description of zonula occludens? + Cell addhesion involved mainly in a barrier avoid free diffusion along epithelial cells - Cell addhesion involved mainly in exchange of small molecules and ions between cells - Cell addhesion involved mainly in anchoring the cell to the basement membrane - Cell addhesion involved mainly in mechanical stability and resistance
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{Which of following terms do not denote one of main ("root") categories ofn classification of epithelial tissue according to the structure? + Transitional epithelium - Trabecular epithelium - Reticular epithelium - Planar epithelium
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{Which sentece is the most appropriate description of pseudostratified columnar epithelium? - Only cells in the basal layer are attached to the basement membrane, cells of higher layer are not attached to the basement membrane + All cells are attached to the basement membrane, but nuclei of these cells are in different distance from the basement membrane - Basement membrane of this type of epithelium has some cylindrical bores - All cells are of columnar shape, cells are in several layers
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{Which statement about resorptive epithelium is not true? - Resorptive function of epithelium is important function of epithelium of large intestine - Resorptive function of epithelium is important function of epithelium of small intestine - Resorptive function of epithelium is main function of epithelium of tubules in kidney + Resorptive function of epithelium is main function of epithelium of skin (epidermis)
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{Which statement about the endocrine secretion is true? - Product of endocrine gland can be released via holocrinne secretion - Product of endocrine gland can be either serous or mucinous + Product of endocrine gland is released to the blood - Product of endocrine gland is released to the duct
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{Which statement about the exocrine secretion is true? + Product of exocrine gland is released into ducts or directly onto the surface - Product of exocrine gland contains in all cased huge amount of enzymes - Product of exocrine gland is usually released to the blood - Product of exocrine gland is usually called a hormone
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{Which structure inside the cell is responsible for contractility of myoepithelial cells? - Network composed of intermediate filaments + Network composed of actin filaments - Network composed of cytokeratines - Network composed of microtubules
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{Which type of collagen is main part of basal lamina? - Type I collagen - Type II collagen - Type III collagen + Type IV collagen
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{Which type of cytoskeleton forms main inner structure of cilia? - Actin filaments associated with type I myosin and other proteins + Microtubules associated with dyneins and other proteins - Microvilli have no obvious inner structure - Cytokeratines associated with ubiquitine
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{Which type of epithelium according to the most pronounced function is epidermis? - Stratified squamous epithelium without ketatinization - Stratified squamous epithelium with ketatinization - Secretory type of epithelium + Covering type of epithelium
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