24 Questions
What is the shape of squamous epithelium cells in surface view?
Hexagonal or irregular
Where are squamous epithelium cells found in the skin?
Epidermis (multilayered)
What is the function of squamous epithelium cells in the skin?
To provide protection and prevent the entry of germs
What other organs do squamous epithelium cells line besides the skin?
Lungs, heart, and oesophagus
What is the shape of squamous epithelium cells in sectional view?
No information is provided about sectional view
What is the characteristics of squamous epithelium cells in terms of size?
They are shorter than they are wide
What is the function of squamous epithelium cells in the lungs?
To provide protection and prevent the entry of germs
What is the main difference between squamous epithelium and columnar epithelium cells?
Shape of the cells
What is the shape of cuboidal epithelial cells in surface view?
Square
Where are cuboidal epithelial cells found?
In the thyroid gland, kidney tubules, salivary glands, pancreas, and liver
What is the function of epithelial tissue in salivary and gastric glands?
To secrete enzymes that help in digestion
What is the function of certain epithelial cells lining the small intestine?
To absorb nutrients from the digested food
What is the function of epithelial tissue in the sweat glands and kidneys?
To remove waste products from the body
What is a gland?
A group of cells that produce certain substances
What is the function of epithelial tissue in general?
To protect the body and organs from injury
What is the location of the nucleus in cuboidal epithelial cells?
Centrally located
What is the main characteristic of epithelial tissue?
Closely packed cells with no intercellular space
What is the function of epithelial tissue in the body?
To cover the outer surface of the body and line internal organs
What is the shape of epithelial tissue cells?
Flat, irregular, cuboidal, or columnar
What is the example of epithelial tissue in the body?
Outer layer of the skin and inner lining of blood vessels
What is the function of nervous tissue?
To transmit nerve impulses
What is the classification basis of animal tissues?
Type of cells, amount of intercellular material, and their functions
How many basic types of animal tissues are there?
Four
What is the name of the tissue that makes up the inner lining of organs?
Epithelial tissue
Study Notes
Epithelial Tissues
- Classified into three types based on cell shape: squamous, columnar, and cuboidal
- Squamous epithelium: cells appear flat, hexagonal or irregular in shape, line the blood vessels, lungs, heart, oesophagus, and epidermis of the skin
- Columnar epithelium: cells appear column-like, longer than wide, with nucleus at the base, found in stomach, intestines, and pharynx
- Cuboidal epithelium: cells appear square in shape, with centrally located nucleus, found in thyroid gland, kidney tubules, salivary glands, pancreas, and liver
Functions of Epithelial Tissues
- Protective tissue, covering outer surface of the body and lining internal organs
- Protects the body and organs from injury, germs, and more
- Specialized to secrete enzymes in salivary and gastric glands for digestion
- Certain epithelial cells absorb nutrients from digested food
- Also helps remove waste products from the body in sweat glands and kidneys
Animal Tissues
- Classified into four basic types: epithelial, muscular, nervous, and connective tissues
- Each type has distinct characteristics based on cell type, intercellular material, and function
This quiz covers the classification of epithelial tissues based on cell shape, including squamous epithelium and its characteristics.
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