JARVIS'S PRACTICAL PHYSIOLOGY. 417 



586. With what organs are the bones supplied ? 



587. How are broken bones re-united? 



588. What shows the process of absorption and deposition? 



589. What effect has exercise on the bones ? 



590. What stunts the growth? How may the bones of childhood 

 be distorted ? What injury is sometimes done in schools ? 



591. What causes the rickets? Who are exposed to this disease? 



592. What is the internal structure of the bones? 



CHAPTER II. 



593. How many bones in the human frame? What their shapes ? 



594. Describe the principal parts of the bony frame. The skull. 



595. Describe the chest ; the spine ; a vertebra. 

 590. How are the vertebrae distributed? 



597. What substance between the vertebrae? How does it aid in 

 bending the spine ? Why is a man shorter at night than in the morn- 

 ing? 



598. What is the shape of the spine? 



599. Describe the pelvis. 



CHAPTER III. 



600. Describe the upper extremities: shoulder blade : collarbone, 

 arm : wrist : hand. 



601. Describe the lower extremity: the foot. 



602. Describe composition and form of the foot. 



603. How may the benefit of tlie arch be shown ? 



604. How do we avoid ajar in jumping from an elevation? 



605. What is the natural shape of the foot? What the artificial? 



CHAPTER IV. 



606. What office do the joints perform ? What are the different 

 kinds of joints? 



607. Describe the hip joint. 



608. Describe the upper joints of the neck. 

 609, 610. What contrivance to prevent jars and friction? 



611. What keeps the joints from wearing out? How are they kept 

 moist ? 



612. How are the bones held together? What is the synovial 

 membrane ? 



613. What is a sprain? 



614. How are the bones dislocated ? 



CHAPTER V. 



615. Describe the muscles. What is their office ? 



616. What is their power ? What is their action? 



617. How are they arranged? 



