Epithelial Tissue Classification

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Questions and Answers

What is the shape of squamous epithelium cells in surface view?

Cubical
Triangular
Rectangular
Hexagonal or irregular (correct)

Where are squamous epithelium cells found in the skin?

Epidermis (multilayered) (correct)
Subcutaneous tissue
Hypodermis
Dermis

What is the function of squamous epithelium cells in the skin?

To aid in wound healing
To regulate body temperature
To produce sweat
To provide protection and prevent the entry of germs (correct)

What other organs do squamous epithelium cells line besides the skin?

Lungs, heart, and oesophagus (A) Signup and view all the answers

What is the shape of squamous epithelium cells in sectional view?

No information is provided about sectional view (B) Signup and view all the answers

What is the characteristics of squamous epithelium cells in terms of size?

They are shorter than they are wide (A) Signup and view all the answers

What is the function of squamous epithelium cells in the lungs?

To provide protection and prevent the entry of germs (C) Signup and view all the answers

What is the main difference between squamous epithelium and columnar epithelium cells?

Shape of the cells (D) Signup and view all the answers

What is the shape of cuboidal epithelial cells in surface view?

Square (A) Signup and view all the answers

Where are cuboidal epithelial cells found?

In the thyroid gland, kidney tubules, salivary glands, pancreas, and liver (B) Signup and view all the answers

What is the function of epithelial tissue in salivary and gastric glands?

To secrete enzymes that help in digestion (A) Signup and view all the answers

What is the function of certain epithelial cells lining the small intestine?

To absorb nutrients from the digested food (A) Signup and view all the answers

What is the function of epithelial tissue in the sweat glands and kidneys?

To remove waste products from the body (B) Signup and view all the answers

What is a gland?

A group of cells that produce certain substances (D) Signup and view all the answers

What is the function of epithelial tissue in general?

To protect the body and organs from injury (C) Signup and view all the answers

What is the location of the nucleus in cuboidal epithelial cells?

Centrally located (A) Signup and view all the answers

What is the main characteristic of epithelial tissue?

Closely packed cells with no intercellular space (D) Signup and view all the answers

What is the function of epithelial tissue in the body?

To cover the outer surface of the body and line internal organs (B) Signup and view all the answers

What is the shape of epithelial tissue cells?

Flat, irregular, cuboidal, or columnar (D) Signup and view all the answers

What is the example of epithelial tissue in the body?

Outer layer of the skin and inner lining of blood vessels (A) Signup and view all the answers

What is the function of nervous tissue?

To transmit nerve impulses (C) Signup and view all the answers

What is the classification basis of animal tissues?

Type of cells, amount of intercellular material, and their functions (D) Signup and view all the answers

How many basic types of animal tissues are there?

Four (B) Signup and view all the answers

What is the name of the tissue that makes up the inner lining of organs?

Epithelial tissue (B) Signup and view all the answers

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