Question

Name the kind of tissue found in the inner lining of intestine?

Answer 1

Hint: Tissue present in the intestine and stomach is used for the secretion and absorption. Sub mucosa is called the thick layer of the tissue present in the stomach. It surrounds the mucosa which is the loose connective tissue. This layer contains blood vessels, lymphatic vessels and nerves. Human stomach contains three tissues. They are epithelial, glandular and muscular tissue. Stomach contains four layers around the stomach walls.

Complete answer:
The inner portion of the intestine consists of the single layer of intestinal epithelium cells. It is formed by the crypts and villi. Stem cells are present in the bottom of the crypts. It produces new cells daily to maintain the tissue. Columnar epithelial cells are the long cells present in the epithelium tissue in the intestine and stomach. Ciliated epithelial cells are called the columnar cells with cilia. Columnar means pillar-like structure. Columnar epithelium provides the movement across the epithelial barrier. This will present at where the absorption and secretion is occurring.
Inner lining of the epithelial tissue tall epithelial cells are present. It presents mostly in the single layer structure or arrangement. Columnar cells also have the nucleus at the centre. But in the digestive tract it is presented or lined up in the base of cells. It is column shaped and height is four times that of the width. Nucleus presents nearly the base of cells.

So, we can say that “The columnar epithelium tissue is present in the inner lining of the intestine”.

Note:
Small intestine consists of the four layers around it. They are mucosa, sub mucosa, muscle layer and adventitia. Intestinal epithelium has polarized cells with enterocytes, goblet cells, paneth cells and stem cells. Simple epithelium tissue is classified by four types based on the shape. It is used to secretes mucus and enzymes. It is present in the digestive tract bladder. Ciliated and non ciliated tissues are presented in the stomach.