Question

Which of the following is not a connective tissue?
A. Blood
B. Lymph
C. Nerve
D. Bone

Answer 1

Hint: Connective tissue plays a major role in maintaining the form of the body and its organs. These connective tissues are composed of cells surrounded by a compartment of fluid called the extracellular matrix (ECM). The main aim of such connective tissues is to bind and support all the other types of tissues in the body in order to provide cohesion and internal support.

Complete answer:
There are about four different types of tissues in our human body. Connective tissue is a continuous network of structure made up of cells, fibers and gel-like substances that helps to provide support and framework for the body. There are different types of connective tissue that are widely distributed in between other tissues throughout the body. They include fibrous tissue, lymphatic tissue, adipose (fat) tissue, cartilage, tendons, bone, ligaments and blood (but not nerves).
 -Blood is composed of two components namely cells and fluid matrix. It mainly includes red blood cells, white blood cells, platelets, and a liquid matrix called plasma.
-Lymph is composed of white blood cells and a fluid matrix. Both Lymph and Blood contain cells that circulate in a liquid extracellular matrix. Therefore, Lymph and Blood are regarded as fluid connective tissues.
-Bone is considered as the hardest connective tissue because it has a large amount of extracellular material which contains cells, protein fibers (collagen fibers) and ground substance. It helps to support and provide strength and flexibility to the tissues by protecting the internal organs of the body.
-Nerves are part of the nervous system which contains nervous tissue. Its main function is to help in the transmission of electrical nerve impulses throughout the body.

Hence, the correct answer is option (C).

Note: Adipose tissue is a type of loose connective tissue composed mainly of fats cells. It is found primarily beneath the skin and bone marrow and also deposits in between the muscles. This tissue is also referred to as body fat tissue because the main function of adipose tissue is to store energy in the form of fats or lipids in the body.