CARTILAGE 



67 



globular form ; and that while adipose tissue contains fat, fat 

 alone is not adipose tissue. 



CARTILAGE 



Cartilage consists of a dense basis substance, in which cells or 

 corpuscles are imbedded. It presents three forms: 



HYALINE CARTILAGE 



The matrix of hyaline cartilage is translucent, dense, and 

 apparently structureless. Minute channels in certain instances 

 and delicate fibrilla? in others have been demonstrated. The sur- 

 face of the cartilage is surrounded by a fibrous envelope, called 

 the perichondrium . 



The basis material contains excavations, generally spherical, 

 called lacunce. They appear to be lined with a membrane, ,and 



Fig. 42. SECTION OF HYALINE CARTILAGE FROM A HUMAN BRONCHUS. 



The ground-substance is apparently structureless, and it contains the lacunae or exca- 

 vations in which one, two, three, or more cartilage cells appear. These cells show a well 

 marked intracellular network (X 400). 



contain one, two, three, and perhaps as many as eight cells 

 the cartilage -corpuscles. The matrix around the lacuna? is called 

 the capsule. It differs from the rest of the matrix and creates the 

 appearance of a membrane surrounding the lacuna?. 



Hyaline cartilage is found covering joints generally, where it 



