Connective tissue (C.T.) with special properties

1. Reticular С.Т.:

In this type of С.Т., the reticular fibers are dominating. It is formed of branching and anastomosing network of reticular fibers and reticular cells. This network of reticular fibers takes the arrangement of the parenchyma of the organ in which it is present.

It is present in the stroma filling the background of organs e.g.; spleen,
lymph node, liver, kidney etc.

2. Mucoid С.Т.:

It is a type of C.T. proper inwhich the mucoid amorphous component of
the intercellular substance is dominating, with mucoid cells and some few collagenous fibers.

It is an embryonic type of C.T. present very rarely in adults e.g. in Wharton’s jelly of the umbilical cord, and bulb of the tooth.

3. Pigmented С.Т.:

It is a type of C.T. proper in which the pigment cells are dominating. It can be seen in the uveal tract of the eye ball (the choroid, the ciliary body and iris).

4. Adipose C.T.:

It is a type of C.T. proper, in which the fatcells are dominating and

arranged inthe form of lobules separated by septa of loose C.T.. There are two types of adipose C.T.

A) White adipose С.Т.:

Figure 23. Photomicrograph of white adipose tissue

Itis present in most of the fatty tissue of the body e.g. the subcutaneous adipose C.T., mammary glands of the adult females. It is characterized by containing unilocular adipose cells.

It performs many functions in the body, namely; energy storage, insulation of heat, supportive pads of fat for other organs and gives the body its characteristic contour (they are the functions of unilocular fat cells).

B) Brown adipose C.T.:

Figure 24. Photomicrograph of brown adipose tissue

1. It ispresent in few sites in the body, namely; the mediastinum, perinephric fat and around the aorta.

2. It contains multilocular adipose cells.

3. Its main function is thermoregulation.

Дата добавления: 2015-07-25