HISTOLOGY: PRACTICE 6

SINGLE BEST OPTION SERIES

         INSTRUCTION: SELECT THE SINGLE BEST OPTION

1.          Which of the following is incorrect about covering epithelia?
   a.       The cells are organized in layers that cover the external surface or line cavities of the body
   b.      Simple epithelium contains only one layer of cells on a basement membrane
   c.       Stratified epithelium contains more than one cell layer on a basement membrane
   d.      The endothelium that line blood and lymphatic vessels are examples of simple cuboidal epithelium  
   e.      None of the above
   2.       Which of the following methods of secretion by glands is inappropriately described?
   a.       In merocrine glands, secretory granules leave the cell by exocytosis with no loss of other cellular material
   b.      In holocrine glands, the product of secretion is shed with the whole cell, a process involving the destruction of the secretion-filled cells
   c.       In apocrine glands, the product is discharged together with parts of the apical cytoplasm
   d.      All of the above
   e.      None of the above
   3.       Sebaceous glands discharge their products by.............................method of secretion:
   a.       Apocrine
   b.      Holocrine
   c.       Merocrine
   d.      Paracrine
   e.      Endocrine
   4.       The connective tissue cells that have become specialized for the storage of neutral fats or for the production of heat are called:
   a.       Mast cells
   b.      Fibrocytes
   c.       Adipocytes
   d.      Macrophages
   e.      Leucocytosis
   5.       The following are examples of microscopy done in histology except:
   a.       Conventional light microscopy
   b.      Phase contrast microscopy
   c.       Nomarski differential microscopy
   d.      Fluorescence microscopy
   e.      None of the above
   6.       Based on cell shape, simple epithelia can be the following except:
   a.       Squamous
   b.      Cuboidal
   c.       Columnar
   d.      Stratified
   e.      None of the above
   7.       Which of the following is incorrect about metaplasia?
   a.       It is the reversible transformation of type of epithelial tissue into another
   b.      The transformation of the ciliated pseudostratified epithelium lining the bronchi into stratified squamous epithelium in heavy cigarette smokers is an example.
   c.       Metaplasia is restricted to only epithelial tissues
   d.      It usually occurs when cells are subjected to abnormal conditions
   e.      None of the above
   8.       Which of the following is incorrect about fibrocytes?
   a.       They are active cells  
   b.      Has acidophilic cytoplasm
   c.       Has elongated nucleus
   d.      Has small amount of rough endoplasmic reticulum
   e.      None of the above
   9.       The most common  cells in connective tissues are:
   a.       Fibroblast #
   b.      Chondroblast
   c.       Plasma cells
   d.      Lymphocytes
   e.      Osteoblasts
   10.   Which of the following is incorrect about collagen?
   a.       It is the most abundant protein in the human body
   b.      They are mainly involved in structural functions
   c.       Elastic fibres are composed mainly of collagen #
   d.      Type IV collagen are found in all basement membrane
   e.      Vitamin C is necessary for its synthesis 
   
   
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