Question

Name the largest organ of the human body
A. Skin
B. Bone
C. Blood
D. None of the above

Answer 1

An organ is a group of tissues that perform a specific function where tissues are made up of cells. Organs perform specific functions. Different organs together make up the organ system. There are 10 organ systems performing different functions.

Complete answer:
As we all know cells together make up a tissue and tissues together make up an organ. An organ performs specific functions as demanded by our body. Human body has 10 distinct organ systems.
The largest organ of the human body is skin. Skin covers the entire body. It is a protective layer which protects from germs, dust getting into the body. It helps in temperature regulation, sensation of touch, hot and cold.
Skin has these special cells called melanocytes which secretes melanin and gives skin its color. It is also responsible for determining eye as well as hair color. Melanin protects the skin from UV radiations and hence protects from skin cancer. It is said that everyone has the same number of melanocytes, but some people produce more melanin than others.
Hair, nails, sweat, and oil glands are derivatives of skin and they along with skin make up the integumentary skin.
Skin is divided into 3 sub layer:

Epidermis: It is the outermost layer in which melanocytes are present. It acts as a waterproof barrier, protecting skin from germs.
Dermis: It is present below the epidermis. It has connective tissues, hair follicles and sweat glands.
Hypodermis: It is made up of fat and connective tissues and hence it is called subcutaneous fat.

Summing it up and hence the correct answer to this question is option ’A’- Skin.

Note: Skin is considered an organ because it is made up of several tissues and the whole body is covered with it. Our skin makes vitamin D when sitting under the sun. Drinking plenty of water and eating healthy food is a key to healthy skin.