Question

The epithelium which forms the inner wall of blood vessels is _______________
a. Cuboidal epithelium
b. Ciliated epithelium
c. Squamous epithelium
d. Compound epithelium

Answer 1

The blood vessels are one of the important parts of the human circulatory system which is responsible for the transport of blood throughout the human body. These vessels carry blood cells, nutrients, and oxygen and transport it to the different tissues of the body. They also transport waste products and carbon dioxide out of the tissues.

Complete answer:
The blood vessels are an important component of the human blood circulatory system. Through the blood vessels, the blood cells, different types of nutrients, and oxygen spread up throughout the whole body. It also helps in the transport of various waste products of the cells and carbon dioxide.

Structurally, the blood vessels are composed of three layers which are the inner layer of tunica intima, the middle layer of tunica media, and the outer layer of tunica adventitia. The blood capillaries are composed of a single layer of endothelium which is supported by sub endothelium.

The epithelium can be arranged in a single layer of cells or layers of two or more. The endothelium is a thin and single layer of squamous epithelium which builds the interior surface of blood vessels and lymphatic vessels. The layer of squamous epithelium generates an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. Endothelium generates a barrier between vessels and tissue to regulate the flow of substances and fluid into and out of a tissue.

Hence, the correct answer is option (C).

Additional information:
Ciliated epithelium present in the human respiratory tract. The cuboidal epithelium present in the excretory duct.
The epithelium is a basic type of animal tissue, where other basic tissues are connective tissue, muscle tissue, and nervous tissue. Epithelial tissues form the outer surfaces of various organs and are a thin, continuous, protective layer of cells. The single layer of the epithelium is known as simple epithelium and the two or more layers of the epithelium is known as the compound epithelium. Both the epithelium can be present in three principal shapes which are squamous, ciliated, and cuboidal.

Note: The blood vessels are an important part of the human circulatory system. The blood is transported throughout the human body through the blood capillaries along with nutrients and oxygen. The waste product of the cells and carbon dioxide are also transported through the vessels. The endothelium is a thin and single layer of squamous epithelium which builds the interior surface of blood vessels and lymphatic vessels.