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OSSEOUS SYSTEM. 



Q. What is this system? 



t#. A tissue characterized by hardness and resistance, 

 admirably calculated for a base, support and protection of 

 the soft parts. 



Forms of the Osseous System. 



Q. What are the forms of the bones? 



.#. They are long, flat and short. 



Q. To what purpose in the animal economy are the 

 long bones principally appropriated? 



/?. To that of locomotion. 



Q. Where are the longest bones found? 



#. In the superior parts of the upper and lower extre- 

 mities. The bones diminish in their length, but become 

 more numerous as you approach the fingers and toes? 



Q. What is the consequence of this location of the long 

 and short bones? 



.#. That the superior part of the extremities has the 

 most extensive motion, while the inferior part has the 

 greatest number and variety of limited motions. 



Q. What is the general conformation of these long 

 bones? 



/?. They are larger at the extremities tlwin in the shaft, 

 which last is usually rounded. 



Q. What advantages result from these enlarged extremi- 

 ties of the long bones? 





