Question:

Inner lining of blood vessels is formed by:

Updated On: Jul 29, 2023
  • ciliated epithelium
  • squamous epithelium
  • cubical epithelium
  • columnar epithelium
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The Correct Option is B

Solution and Explanation

Simple squamous epithelium makes up the lining of the blood vessels and lymphatic vessels. It is composed of the thinnest layer of flat cells. These cells have the basement membrane on one side and the lumen on the other. They can be found in tissues throughout the body that need fast diffusion, such as glomeruli, capillaries, and alveoli.

A thin layer of subendothelial connective tissue surrounds it, and it is held together by an intercellular polysaccharide matrix. The internal elastic lamina, which is a network of circularly organised elastic bands, is interwoven throughout. Within the tunica intima, a thin membrane made of elastic fibres runs perpendicular to the vessel.

A single layer of flat cells in contact with the basal lamina, one of the two layers of the basement membrane, may make up a simple squamous epithelium.

This type of epithelium is frequently present when membrane filtration or diffusion allows tiny molecules to move through them readily.

The nuclei of cells are oblong and flat. The pavement epithelium is another name for it because of the way it looks like tiles.Filtration and diffusion are connected to this epithelium. This tissue creates a delicate lining and is quite thin. It provides scant protection, if any.

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Concepts Used:

Animal Tissues

Human bodies, like most animal bodies, are made up of four different types of tissue:

Epithelial Tissue:

This tissue forms the outer layer of the body and also lines many of the body's cavities where it has a protective function.

General functions of epithelial tissue:-

  1. Provides a barrier between the external environment and the organ that it is covering.
  2. Specialized to function in secretion and absorption.
  3. Protects organisms from microorganisms, injury, and fluid loss.

Connective Tissue:

This tissue assists in the support and protection of organs and limbs and depending on the location in the body it may join or separate organs or parts of the body.

Muscle Tissue:

This tissue enables various forms of movement, both voluntary and involuntary.

Nerve Tissue:

This tissue is responsible for the carrying of electrical and chemical signals and impulses from the brain and central nervous system to the periphery, and vice versa.