Question

Internal elastic lamina is present in the wall of
A. Arteries
B. Veins
C. Both A and B
D. Heart

Answer 1

Hint: Internal elastic lamina is the elastic tissue layer which is associated with arteries, and arteries are the blood vessels which transport the oxygenated blood to the all body part from the heart. Every artery is a muscular tube that is lined by smooth tissue and composed of three-layer named as intima, media and the adventitia.

Complete answer:
> Arterioles possess an internal elastic lamina and layer of smooth cells, and the adventitia contains a layer of collagen and elastin fibres. The internal elastic lamina or lamella, which forms the outermost part of the tunica intima of blood vessels. In elastic arteries called aorta have typical elastic laminae in between a layer of smooth muscles in tunica media.

The disruption of internal elastic lamina can be observed in chronic allograft nephropathy that causes narrowing of the lumen and in case of fungal rhinosinusitis the internal elastic lamina faces predilection.

Hence, the correct answer is option (A).

Additional information:
> Veins:- These are also blood vessels that carry deoxygenated blood from all the body part toward the heart. Almost all veins carry deoxygenated blood except one that is known as pulmonary veins, which carry oxygenated blood to the heart. There are three types of veins are found named as deep veins, superficial veins and pulmonary veins.

> Heart:- It is the muscular organ which pumps the oxygenated blood and receives deoxygenated blood. It is composed of cardiac muscle, which is specialized tissue, which associated with the heart keeps the heart beating. This organ is necessary to pump the blood because blood carries a different kind of substance such as nutrient, defence system, oxygen and other unnecessary substances that means to excrete out from the body.

Note: Circulatory system is associated with the blood vascular system, in which pumping of blood takes place by a muscular organ called heart, circulation of blood is a necessary vital process of the body, which helps in maintaining the body homeostasis and balance the body temperature.