Histology

Histology

Histology: is that branch of anatomy that studies tissues of animals and plants. Histology deals with the structure and function of the body.

There are 4 level of organization in vertebrate body:
Cell
tissues
system
organism body.

The Cell:

The cell is the basic structural, functional and biological unit of all known living organisms.

The types of cells according the shape

1. Spherical shape: eg. white blood cell (W.B.C.)


2. Disk shape: eg. red blood cell(R.B.C.)with two concave surfaces.

3. Squamous shape: such as liver

cells

4. Cuboidal shape : such as Cuboidal epithelial cells

5. Columnar shape such as Columnar epithelial cells.

6. Star shape : such as multi polar nerve cell

7. Irregular shape : such as amoeba sp. & macrophag