Exam (elaborations) Test Bank For Histology

Whichcellisaalsocalledaseptalcell? a.Claracell b.TypeIpneumocyte c.TypeIIpneumocyte d.Dustcell e.Brushcell Answer:c TheClaracellisfoundintheterminalbronchioles.ThetypeIpneumocyte isasquamousepithelialcell.Itcoversmostofthesurfaceofthealveoli. ThetypeIIpneumocyteisalsocalledaseptalcell.ThetypeIIpneumocyte secretessurfactant.Thedustcellisalsocalledthealveolarphagocyte. Brushcellsareoccasionally,butrarely,seeninthealveolarepithelium. 2. Whichcellisarespiratorymacrophage? a.Kupffercells b.Histiocyte c.Dustcell d.Langerhanscell e.Microglia Answer:c Macrophagesaremononuclearphagocytes.Manytissueshaveresident (fixed)macrophages.Fixedmacrophagesaregivenauniquename, dependingonthetissuethattheyarelocatedin.Kupffercellsarethe hepaticmacrophages.Histiocytesaremacrophagesseeninconnective tissue.Dustcellsarealveolarmacrophagesfoundintherespiratorytract. Langerhanscellsaremacrophagesseenintheskin.Microgliaarethe centralnervoussystem macrophages. 3. Whichcellisatypeofneuron? a.Basalcells b.Brushcells c.Olfactorycells d.Sustentacularcells e.Alloftheabove Answer:c Olfactorymucosalinestheroofandportionsofthewallsofthenasal cavity.Itcontainsseveralcelltypes:basalcells,brushcells,olfactorycells andsustentacularcells. Basalcellsarelocatedinthebasallamina.Brushcellsareinvolvedwith generalsensationoftheolfactorymucosa.Olfactorycellsarebipolar neuronsthatarethereceptorsforsmell.Sustentacularcellsaresupporting cells.Sustentacularcellsaremostnumerouscelltypeintheolfactory epithelium. 4. Whatcelltypesarefoundintherespiratorymucosa? a.Ciliatedcells b.Gobletcells c.Basalcells d.Brushcells e.Alloftheabove Answer:e Inman,respiratorymucosaiscomposedofciliatedpseudostratified columnarepithelium withgobletcells.Respiratorymucosacontains severalcelltypes:ciliatedcells,gobletcells,basalcells,andbrushcells. Respiratorymucosaislocatedliningtherespiratorysegmentofthenasal cavity.Itlinestheconchaeandtheparanasalsinuses. 5. Whattypeoftissuemakesuptheepiglottis? a.Compactbone b.Spongybone c.Hyalinecartilage d.Fibrocartilage e.Elasticcartilage Answer:e Theepiglottisispartofthelarynx.Itiscomposedofelasticcartilage. 6. Whatisthesmallestairspaceoftherespiratorytree? a.Alveolarduct b.Alveoli c.Alveolarsac d.Respiratorybronchiole e.Terminalbronchiole Answer:b Therespiratorytractismadeofbranchingstructures,muchlikethe branchesofatree.Thetracheabranchesintotwobronchiwhichbranch intosmallerbronchi.Thebronchiultimatelybranchintosmaller