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Which is the largest organ of the human body?
A. Liver
B. Skin
C. Heart
D. Brain
Correct Answer Is Option = Skin
Notes / Explanation
The largest organ of the human body is the skin, which covers the entire outer surface of the body and which, when its whole area and weight are considered, is larger than any of the internal organs. An organ is a part of the body made up of tissues working together to perform particular functions, and although people often think first of the internal organs such as the heart, the liver and the brain, the skin, which forms the outer covering of the whole body, is in fact the largest organ of all, having a large surface area and a considerable weight. The skin performs a number of very important functions that are essential to the health and survival of the body. One of its most important functions is to act as a protective barrier, covering and protecting the inner parts of the body from the outside world, and helping to keep out harmful germs, substances and influences, as well as protecting against physical injury. The skin also plays an important role in controlling the temperature of the body, helping to keep the body from becoming too hot or too cold, for example through the production of sweat, which cools the body as it evaporates, and through the control of the flow of blood near the surface. The skin is also the organ of the sense of touch, containing structures that allow the body to feel touch, pressure, heat, cold and pain, so that it enables us to sense and respond to our surroundings. The skin also helps to prevent the loss of too much water from the body, and it plays a role in the production of a certain vitamin with the help of sunlight. The skin is made up of several layers, and it is a living and constantly renewing organ. Because of its many important functions, the skin is a vital organ, and its health is important to the overall health of the body. The study of the organs of the body, including the skin, and their functions is an important part of the study of the human body. For PPSC and other competitive examinations, the key points to remember are that the largest organ of the human body is the skin, that it covers the entire outer surface of the body, that it performs important functions including protecting the body as a barrier, helping to control body temperature, and serving as the organ of the sense of touch, and that it also helps to prevent water loss and plays a role in the production of a certain vitamin with the help of sunlight.
