Epithelia
Epithelia
human organization 1. Cell: the basic structure of human cell 2.Tissue: consists of cells and intercellular substance 3.Organ: consists of different tissues which have related function 4.System: consists of different organs which have related function
1.Cell: the basic structure of human cell 2.Tissue: consists of cells and intercellular substance 3.Organ: consists of different tissues which have related function 4.System: consists of different organs which have related function Human organization
Epithelia Connective tissue Human Tissues I Muscle Tissue Nervous tissue
Human Tissues Epithelia Connective tissue Muscle Tissue Nervous tissue
Genera characteristic classiffication of epithet (-)General characteristics of epithelia 1. cells arranged intensively small quantity of intercellular substance 2. cells have polarity 3. no blood vessels 4. Function: Protection, secretion, and absorption, etc
一、General characteristics and classification of epithelia （一） General characteristics of epithelia 1. cells arranged intensively;small quantity of intercellular substance. 2. cells have polarity. 3. no blood vessels. 4. Function:：Protection, secretion, and absorption,etc
(= Classification of Epithelia Epithelia mainly classified into 2 sorts: Covering epithelia: Cells arranged like membrane Localization: covering the outer sur face of the body and the inner surface of the cavities sacs or ducts within the body Function: Protection Glandular epithelia: Function- Secretion
（二）Classification of Epithelia Epithelia mainly classified into 2 sorts: Covering epithelia：Cells arranged like membrane Localization: covering the outer surface of the body and the inner surface of the cavities ,Sacs or ducts within the body. Function: Protection. Glandular epithelia：Function- Secretion