What is the function of the squamous epithelial cells from your buccal cavity?

Squamous epithelial cells divide about once in every 24-hour period and line the human mouth as part of the buccal muscosa. The cells secrete mucin, the substance that is the principal component of mucus. With the additional help of the salivary glands, the mucin keeps the mouth’s interior moist.

How do you test cheek cells under a microscope?


  1. Take a clean cotton swab and gently scrape the inside of your mouth.
  2. Smear the cotton swab on the centre of the microscope slide for 2 to 3 seconds.
  3. Add a drop of methylene blue solution and place a coverslip on top.
  4. Remove any excess solution by allowing a paper towel to touch one side of the coverslip.

What cells are found in buccal smear?

By far the most frequent buccal cell type in cheek swabs were the pink non-keratinous superficial squamous cells (mean 70.5% of epithelial cells in children and 73.9% in adults), followed by the orange keratinous superficial squamous cells (mean 27.6% of epithelial cells in children and 19.6% in adults) and the blue …

Why would you use cheek cells to test for DNA?

By adding soap to your cheek cells, it breaks up the mem- branes of the cell and nucleus and frees the contents of the cell, including DNA. So the DNA begins to float near the top of the soapy water. DNA is soluble in water but not in alcohol.

Are squamous cells dead?

The keratinocytes from the squamous layer are then pushed up through two thin epidermal layers called the stratum granulosum and the stratum lucidum. As these cells move further towards the surface of the skin, they get bigger and flatter and adhere together, and then eventually become dehydrated and die.

What is the main function of cheek cells?

These structures, commonly thought of as cheek cells, divide approximately every 24 hours and are constantly shed from the body. Cheek cells secrete a continuous supply of mucin, the principal element of mucous. In combination with the salivary glands, the mucin maintains a moist environment in the oral cavity.

What is buccal smear test used for?

A buccal smear is a test where cells are taken from the cheek. Cells are collected by scraping the cheek with a cotton swab. The cells can be used for genetic testing, as well as evaluated for the presence of Barr bodies (a mass seen in a normal female sex chromosome).

How do you extract DNA from cheek cells at home?

Use a glass rod or plastic toothpick to remove the DNA from its container. Do this by twirling the rod into the DNA, like twirling spaghetti onto a fork. Dip the rod into the container of alcohol. You may need to swish it around gently to dislodge the DNA you just extracted.

Can you see DNA in spit?

Of course, you can’t look at your own spit and see sloughed-off cells, the DNA they contain or the genetic information coded in the long chain of base pairs. You need special equipment and scientists who know how to use it. You also need trained counselors who can help you interpret the data once you get it back.

How is the simple squamous epithelium isolated from the cheek?

Simple squamous epithelium, isolated Simple squamous epithelium, isolated (40X) Buccal mucosal When you first look at this slide you may think that it looks like a bunch of dirt. The slide was made by scraping some of the surface cells from the lining (buccal mucosa) of someone’s cheek.

How are squamous epithelial cells similar to fish scales?

Squamous epithelial cells are large, flattened cells filled with cytoplasm possessing a small round nucleus at the centre. They are flat and have an irregularly round shape. The term “squamous” is derived from the comparison of the cells to the fish’s scales.

How are squamous cells involved in abnormal Pap smears?

Squamous cells often are involved in abnormal Pap smears, as in a diagnosis of ASCUS ( A typical S quamous C ells of U ndetermined S ignificance ), 2 which indicates the presences of unusual cells that are not clearly benign or bad. Potentially pre-cancerous, abnormal Pap smear results are sometimes diagnosed as squamous intraepithelial lesions.

Where are the different types of epithelial cells found?

There are three types of epithelial cells: squamous, cuboidal, and columnar. Squamous cells are what we commonly examine when it comes to Pap testing and cell abnormality. Squamous cells are found in the esophagus, mouth, and vagina, protecting the body against wear and abrasion. Different layers of Epithelial Cells