GENERAL BUILD OF THE HUMAN BODY 



II 



hearing. The sympathetic or ganglionic system supplies the 

 involuntary muscles. 



The two parts of the nervous system are not entirely separate, 

 being connected by numerous nerve filaments. 



By means of the nervous system we receive impressions from 

 the external world through the organs of the senses. The nervous 

 system also, by its connection with the muscles, causes and controls 

 the motions of the body. 



THE SYSTEMS 

 OF OBGANS. 



SUMMAEY. 

 The osseous system . 



The muscular system . | 

 The alimentary system 



The circulatory system 



The respiratory system 

 The excretory system . 



(Cerebro-spinal 

 Sympathetic 



Backbone. 



Ribs. 



Breast-bone. 



Shoulder-bones. 



Bones of the hip. 



Bones of the skull. 



Bones of the limbs. 



Voluntary muscles. 



Involuntary muscles. 



Pharynx. 



CEsophagus. 



Stomach. 



Small intestine. 



Large intestine. 



Heart. 



Arteries. 



Capillaries. 



Veins. 



Larynx, or voice-box. 



Trachea, or wind pipe. 



Lungs, or lights. 



Liver. 



Kidneys. 



Skin. 



Brain. 



Spinal cord. 



Nerves. 



Ganglia. 



Nerves. 



QUESTIONS ON LESSON I. 



1. What are the uses of ligaments, cartilage, and tendons ? 



2. What are the chief characteristics of muscle ? 



3. Enumerate the chief systems of organs, giving the names of the various 



organs in each system. 



4. Describe the organs of the alimentary system. 



5. Give a short description of the organs belonging to the circulatory system. 



6. What are the organs connected with respiration ? 



7. Name, and briefly describe, those organs which purify the blood by 



excretion ? 



8. Give a brief description of the nervous system. 



9. Distinguish between the cerebro-spinal and sympathetic systems. 



