20 PHYSIOLOGY FOR THE LABORATORY. 



g. The synovial liquid is found as soon as the capsular 

 ligament is cut. It is secreted by the synovial membrane. 



1. Rub a little between your fingers. 



2. What is its use ? 



A. Sketch and label all the parts. 



C. Some Other Joints. 



Material. The fore leg of a lamb. 



The joints of the fore leg of a lamb may be studied. 



1. Compare the fore leg of the lamb with the upper limb 



of man and find which joint you are studying. 

 Describe the way in which the bones fit together at 

 the joint, and explain how motion in certain direc- 

 tions is prevented while it is allowed in others. 



2. Identify the different parts of the joint that are named 



under the ball and socket joint, except a and b. 

 Sketch. 



D. The Microscopical Structure of Cartilage. 



Material. A prepared slide of hyaline cartilage. 

 Apparatus. A compound microscope. 



Study with the high power of a compound microscope a 

 prepared slide of a piece of hyaline cartilage. 



Notice : 

 1. The cartilage cells. 



a. What is their shape ? 



b. How are they arranged? 



c. What parts of the cell can you identify ? 



