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DERMOID SYSTEM. 



Q. What are the uses of this texture? 



*#. To defend parts from external injury; to eliminate 

 much of the residue of nutrition and digestion; and to 

 throw it into relation with external bodies. It connects 

 the existence of man with surrounding objects. 



Forms of the Dermoid System. 



Q. There are several kinds of wrinkles on the skin, to 

 what are they owing? 



ft. To the subjacent muscles, to the motions of parts, 

 and to old age. In this last the wrinkles are owing to 

 the removal of sub-cutaneous fat. 



Q. If the sub-cutaneous fat be removed by emaciation 

 in young persons, do you perceive wrinkles in the skin? 



Ji. No; because the organic contractility is not lost, as 

 in old age, and the skin adapts itself to the emaciated 

 parts. 



Q. How does the connexion of the skin with the sub- 

 jacent parts in man, differ from that connexion in ani- 

 mals? 



Jl. In animals the skin lies over a fleshy layer called 

 panniculus, which the animal moves at pleasure. In man 

 the only resemblance to this is the occipito-frontalis and 

 the platisma myoides muscles. 



