THIS DOCUMENT OR MAINLY CLASS NOTES WILL BE BENEFICIAL FOR A STUDENT IN ORDER TO GET INTO DEPTH OF epithelium tissue WHOLE INFORMATION AND WILL HELP FOR MOCK TEST FURTHER ITS WRITEEN IN A VERY EASY MANNER WITH NORMAL VOCABULARY EASY TO UNDERSTAND IN ONE GO .
Animal Tissue PART 1
TOPIC ~ EPITHELIAL TISSUE
Tissue = refers to group of similar cells along with their intercellular
substances that perform a specific function
1.Epithelial tissue
● Epithelial is covering [ lining ] of some body parts.
● Epithelial process of free surface which faces external environment or
body fluid or any human in body.
● In epithelial cells are compactly packed with some intercellular matrix
● Cells have small amount of cementing material between them and
almost no intercellular spaces.
● On the basis of number of layers of epithelial tissue are of two types :
A. Simple = single layer example lines the body cavity , tubes and ducts
Types of simple epithelium on basis of structural modification of cells
Simple squamous Simple cuboidal simple columnar
1. Single layer of 1. Layer of cube 1. single layer of
flat cells cells tall and Slender
2. to facilitate 2. secretion cells with
diffusion of adsorption basely placed
castles 3. ~ pct (with nuclei
3. present at Wall micro villi) in a 2. And secretion
of blood nephron and absorption
vessels, lining (proximal 3. ~ lining of
of alveoli convulated stomach and
tubule ) colon
~DCT( without ~ lining ofSmall
micro villi) in intestine (with
the nephron micro villi)
(distal
convulated
tubule )
~ ducts of
gland
Eg.salivary
gland,
pancreas,
thyroid
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