Question

Which of the following is an embryonic connective tissue?
A. Endometrium
B. Mediastinum
C. Mesenchyme
D. Endothelium

Answer 1

A body is composed of millions of cells and tissue. There are four basic types of tissue found in an animal which are epithelial tissue, muscular tissue, nervous tissue, and connective tissue. It mainly provides support and connects different tissues and organs of the body.

Complete answer:
When a group of cells and their intercellular substances performs a specific function then the group of cells is known as tissue.
The connective tissues can be defined as a type of tissue which provides support and connects to the different tissues and organs of the body. They are commonly found in every part of the body. The connective tissue originated from the mesoderm which is the middle germinal layer of the embryo.
The connective tissue is composed of a few cells that present in the intercellular structure of protein fibres which are released by the cells. This is known as collagen or elastin. The cells also produce a thin gel of polysaccharides, which combine with the fibres to form matrix or ground substance.
The fibres are responsible for the elasticity, flexibility and strength of the connective tissues. The function and types of connective tissues rely on the nature of the intercellular substance present. In a connective tissue, there are three types of fibres which are collagen, elastic and reticular.
Mesenchyme is a part of embryonic mesoderm. It is composed of unspecialized cells that are placed loosely arranged in a gelatinous ground substance. From the mesenchyme, all connective tissue, bone, cartilage, and the circulatory and lymphatic systems are produced.
The endometrium represents the inner mucous membrane of the uterus in mammals while the mediastinum is the group of structures that found in the thorax and, the endothelium is the thin layer of cells that can be seen in the interior of the blood vessels and lymphatic vessels.
Thus, the right option is C.

Note: Tissue can be referred to a group of cells which perform the same types of function. The connective tissue mainly provides support and connects to the different tissues and organs of the body. They are developed from the mesenchyme which is the part of embryonic mesoderm and composed of loosely packed, unspecialized cells that are placed in a gelatinous ground substance.