HISTOLOGY: PRACTICE 1

SINGLE BEST OPTION SERIES

         INSTRUCTION: SELECT THE SINGLE BEST OPTION

1.        The fundamental tissues of the human body include the following except:
   a.       Epithelial
   b.      Integumentary  
   c.       Connective
   d.      Muscular
   e.      Nervous
   2.       The optical components of a light microscope include the following except:
   a.       Condenser
   b.      Specimen slide
   c.       Objective lens
   d.      Eyepiece
   e.      None of the above
   3.       The periodic acid-Schiff (PAS) reaction use is to identify..................................by exposing tissue sections to periodic oxidation and then reacting them with Schiff’s reagent.
   a.       Proteins
   b.      Carbohydrates
   c.       Lipids
   d.      Lipoproteins
   e.      Micronutrients
   4.       Stratified epithelium is classified according to the cell shape of its superficial layer as follows except:
   a.       Squamous
   b.      Cuboidal
   c.       Pseudostratified
   d.      Columnar
   e.      Transitional
   5.       The following exocrine glands contain myoepithelial cells except:
   a.       Sweat glands
   b.      Lachrymal glands
   c.       Sebaceous glands
   d.      Salivary glands
   e.      Mammary glands
   6.       Which of the following is incorrect about fibroblast?
   a.       Has abundant and irregularly branched cytoplasm
   b.      The nucleus is ovoid, large and pale staining
   c.       There is a prominent nucleolus in the nucleus
   d.      Their Golgi complex is poorly developed
   e.      Their cytoplasm is rich in rough endoplasmic reticulum
   7.       Which of the following is incorrect about the preparation of tissues for microscopic examination?
   a.       In chemical fixation, tissues are usually immersed in solutions of stabilizing or cross-linking agents called fixatives
   b.      Tissues are usually embedded in a solid media to facilitate sectioning
   c.       Mallory stain and Masson’s stain poorly show the nucleus and cytoplasm of cells
   d.      When using glutaraldehyde for fixation, the fixing action is reinforced by virtue of its being a dialdehyde which can cross-link proteins
   e.      The chemistry of the process in fixation may involve fixatives reacting with amine groups of tissues.
   8.       The critical factor in obtaining a crisp, detailed image with the microscope is its resolving power. The maximal resolving power of the light microscope is approximately:
   a.       0. 1-0.8 μm
   b.      0.2-0.4 μm
   c.       0.3-0.9 μm
   d.      0.4-0.6 μm
   e.      0.5-0.7 μm
   9.       The first step in specimen preparation for light microscopy or transmission electron microscopy is:
   a.       Dehydration
   b.      Embedding
   c.       Fixatiom
   d.      Staining
   e.      Sectioning
   10.   Stratified non-keratinized squamous epithelium is normally line the following except:
   a.       Mouth
   b.      Trachea
   c.       Oesophagus
   d.      Vagina
   e.      Anal canal 
   
   
   
   
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