13. What are the different types of epithelial tissues? Prepare a tabular column
on the basis of their location, structure/function.
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Answers
Answer:
The different types of tissues are :-
- Simple squamous epithelia.
- Simple cuboidal epithelia.
- Simple columnar epithelia.
- Stratified squamous epithelia.
- Stratified cuboidal epithelia.
- Stratified columnar epithelia.
Explanation:
Sorry Didn't know the answer for prepare a tabular column
on the basis of their location, structure/function.
I guess this was healpfull
here is the answer
Explanation:the answer is in this format-
Types of Epithelial Tissue
Location
Structure
Function
Simple squamous
Location Blood vessel lining, air sac lining of lungs
A single layer of flat cells having irregular boundaries
Transport by diffusion and where minimal protection is required
Simple Cuboidal
Location The tubular lining of kidneys, glandular ducts
A single layer of short cylindrical cells. It may have microvilli as in proximal convoluted tubules
Absorption and secretion
Simple Columnar
Location Digestive tract and upper respiratory tract lining
A single layer of columnar cells (tall and slender) and often ciliated
Protection, absorption, mucus secretion and movement in a specific direction
Stratified Squamous
Location The lining of the mouth and vagina
Made up of several layers of cells, continuously sloughed off and regenerated. The older layer of cells is pushed upwards and becomes flat. The lower layer is columnar and metabolically active
Protection
Stratified Cuboidal
Location Mammary glands, sweat gland and salivary glands
The upper layer is cuboid and other layers may be cuboidal or other types
Protection of ducts of various glands
Stratified Columnar
Location Male urethra and lobar ducts of salivary glands
There is a layer of columnar cells present on squamous, columnar or cuboidal epithelial cells
Protection and secretion
Pseudostratified Columnar
Location Respiratory passage and ducts of many glands
Similar to columnar epithelium but all the cells are not of similar height
Protection, secretion and movement of mucous
Transitional epithelia or urothelium
Location Urinary bladder, urethra, ureter
Stratified epithelium, which can contract or expand as per the requirement. Cells are cuboidal when not stretched but when the organ stretches, then tissue gets compressed and cells appear irregular and squamous-shaped
Stretch readily to accommodate the different volume of liquids
Act as a barrier and have tight junctions to prevent reabsorption of toxic substances
Keratinised
Location The outer or apical layer of the cell
Mostly dead and devoid of nucleus and cytoplasm. The cytoplasm gets replaced by keratin, which makes the layer waterproof
Protection against abrasion
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