82 



HUMAN TISSUES 



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elastic tissue and cartilage, and 

 the hardness of bone are all due 

 to the composition and distribu- 

 tion of the intercellular material 

 of the connective tissue cells. 



Questions 



1. What is meant by secretion? 



A. Name four materials mentioned 

 in this chapter secreted by cells. 



B. Give the purpose of each material. 

 Name three types of epithelial tissue. Tell the function of each. 

 What does the burning of bone show you ? 



What effect do some acids have on a bone ? 



Why should the food of an infant contain mineral matters ? 



Arrange in tabular form the names of the tissue cells discussed, 



Certain connective tissue cells deposit 

 long strands of extracellular material in the 

 form of either yellow or white fibers. 



2. 

 3. 



4. 

 5. 

 6. 



the function of each, and an adaptation for each function. 



