58 



STUDENTS HISTOLOGY 



pointed, and that spheroidal and ovoidal cells are frequently wedged 

 in between them. Note the free border: it consists of striae, and 



PIG. 32. COLUMNAR CELLS FROM SMALL INTESTINE OF RABBIT. 



A. Tapering attached extremity. 



B. A swollen goblet cell. 



C. Finely striated free border. 



D. Transparent line of union between the striated portion and the body of the cell (X 400). 



is separated from the body of the cell by a translucent line. This 

 appearance is also that of the epithelium in the human intestine. 



PIG. 33. CILIATED COLUMNAR CELLS FROM BRONCHUS OF PIG (X 400). 



Ciliated Columnar Epithelium 



Prepare, by scraping, a slide from the mucous surface of the 

 pig's bronchus (which has been macerating in the chromic acid) 



