GENERAL VIEW OF THE SYSTEM. 331 



4. Splanchnology. A description of the viscera. 



5. Adenology. A description of the glands. 



6. Angiology. A description of the vessels. 



7. Neurology. A description of the nerves. 



8. Dermology. A description of the skin. 



Explanations. The solid parts of the living system 

 are named organs, as the instruments by which the va- 

 rious functions are performed. Thus, the muscles are 

 the organs of locomotion, the eyes the organs of sight, 

 and the heart and arteries those of the circulation. 



These solid parts of our fabric, when minutely exam- 

 ined, are found to consist ultimately of layers of minute 

 fibres, or filaments, varied in appearance and texture, ac- 

 cording to the use and offices of the part which they 

 compose. 



Tissues, or Textures. Tissue is a web-like struc- 

 ture, which constitutes the chief elementary parts of ani- 

 mal bodies. Nearly all the soft parts of animals are 

 made up of such tissues, or textures, which are either 

 spread out into membranes, or collected into cords, or 

 hollowed out into canals ; and by their diversity of com- 

 bination, figure, and color, they originate all the modifi- 

 cations of structure and functions which the different or- 

 gans possess. 



According to Mr. Paxton, author of a Treatise on Hu- 

 man Anatomy, the systems of texture may be placed in 

 the following order : 



1 . The Bony System. 



2. The Cartilaginous System. 



3. The Fibrous System. 



4. The Muscular System. 



5. The Vascular System. 



6. The Nervous System. 



7. The Mucous System. 



8. The Serous System. 



What are the names of the divisions of the anatomy of the solids, and what 

 do they signify ? What is meant by the organs of the body ? What are tis- 

 sues, or textures, of animal bodies ? 



