We don’t thank our skin enough for its roles in our bodies. It’s a tough and complex organ that protects our bodies from the environment and all sorts of harmful particles and microbes. Our skin even contains a protein called keratin to make it waterproof.
The skin is actually the body’s largest organ – stretching as long as six meters in surface area. The skin is made of two primary layers – the epidermis at the top, and the dermis deeper down – which contain several structures.
The epidermis is made of many thin layers – most of which are composed of dead cells. The deepest layer creates new cells that are continuously being pushed upward, dying and leaving behind their keratin as they become new epidermis.
The dermis is the thicker, deeper layer of the skin. You can find several structures here, such as the sweat glands, sensory nerves that detect touch, heat and pain, and blood vessels. The roots of our hairs are also located here.
A third layer – called the hypodermis – exists. It connects the skin to the muscles and bones beneath. Our body stores fat in the hypodermis to conserve energy and act as a soft cushion against damage.
The diagram of the skin labelling quiz presented here can be a valuable guide in gaining a better understanding of the skin’s different parts and how they are specialized to protect and heal the body from damage, and sense various stimuli like touch and heat.