Hap

4. • Classification of Epithelial Tissue
• Arrangement of cells in layers
• Cell shapes
• Simple epithelium
• Stratified epithelium
• Simple epithelium
• A. Simple squamous epithelium
• 1. Endothelium (lines heart, blood vessels, lymphatic
vessels)
• 2. Mesothelium (forms epithelial layer of serous
membranes)
• B. Simple cuboidal epithelium
• C. Simple columnar epithelium
• 1. Nonciliated (lacks cilia)
• 2. Ciliated (contains cilia)

5. D. Pseudostratified columnar epithelium
1. Nonciliated (lacks cilia)
2. Ciliated (contains cilia)
II. Stratified epithelium
A. Stratified squamous epithelium*
1. Nonkeratinized (lacks keratin)
2. Keratinized (contains keratin)
B. Stratified cuboidal epithelium*
C. Stratified columnar epithelium*
D. Transitional epithelium or urothelium (lines most of
urinary tract)

7. Epithelial tissue
They form the covering of all body surfaces, line body
cavities and hollow organs, and are the major tissue in
glands.

9. Covering and lining epithelium
Simple squamous epithelium
Location:- it is lines heart, blood vessels, lymphatic
vessels, lungs, etc.
Function:- filtration ,(kidney), diffusion, e.g.(oxygen in
lungs)
Simple cuboidal epithelium :- centrally located in
nucleus.
Location:- surfaces of ovary, kidney tubules and smaller
duct of many glands.
Function:- Secretion and absorption.
Non Ciliated simple columnar epithelium:- Lines
gastrointestinal tract (from stomach to anus), ducts of
many glands, and gallbladder

10. Function
Cilia beat in unison, moving mucus and foreign particles
toward throat, where they can be coughed up and
swallowed or spit out. Coughing and sneezing speed up
movement of cilia and mucus. Cilia also help move oocytes
expelled from ovaries through uterine (fallopian) tubes into
uterus.
Ciliated simple columnar epithelium:-
Location Lines epididymis, larger ducts of many glands, and
parts of male urethra.
Function Absorption and secretion.

18. Glandular epithelium and glands
Endocrine gland and exocrine gland
Endocrine gland
Secretary products hormones diffuse into blood after
passing through interstitial fluid.
Location:-pituitary glands brain, pineal gland, parathyroid
gland
Function:- regulate various activities in body
Exocrine glands:- secretary products are released into
duct.
Location:- sweat, oil, and earwax etc

29. Membranes
Membranes are flat sheet of pliable tissue that
cover or line a part of the body. The combination of
an epithelial layer and an underlying connective
tissue layer constitutes an epithelial membrane.
Epithelial layer
•Mucous membrane
•Serous membrane
•Cutaneous membrane
Synovial membrane

33. Function of connective tissue
•It bind together support and strengthens other body
tissue
•Protects and insulate internal organs.
•Primary location of stored energy reserves
•Main source of immune response
• major transport system of body e.g. Blood and lymph