THE MUSCLES. 49 



and die before their time. They have squandered the 

 powers which nature has given them. 



QUESTIONS. 



SECTION I. 1. What are muscles? Where are they found? 

 2, 3, What two kinds of muscles are there ? 



4, What holds the muscles together ? 



5, What is a tendon ? An aponeurosis ? 



6, How many muscles in the body? Which is the longest? 

 Which is the smallest? Where is the biceps humeri? Pectoral? 

 Gastrocnemius ? Tendon of Achilles ? 



SECTION II. 1. What is the special property of muscle ? Can 

 we explain the contraction of muscle? 



2, What is the difference between the contraction of voluntary 

 and involuntary muscle ? 



SECTION III. 1. How does voluntary muscle look under the 

 microscope ? 



2, How does involuntary muscle look under the microscope? 



SECTION IV. 1. What is the law of exercise? 



2. Is exercise more important for young than for older persons ? 



3. What class of people have the best prospect of long life ? 



4. 5, What kind of exercise is best suited to a muscle-worker? 

 What kind to a brain-worker? 



6, What three general reasons are there for muscular exercise? 



7, What special reasons ? 



8, What three qualities of muscle should be cultivated? 



11. Name the conditions which make exercise useful. 



12, Name the cautions to be observed in exercise. 



13, What is excess in exercise ? What are its results ? 



14. What is the use of the muscles of the face? How is char- 

 acter written on the countenance ? 



SECTION V. 1. What change can alcohol make in muscle? 

 How does it affect the muscles indirectly? What is the practice 

 of athletes in training with regard to alcohol and tobacco? 



