The Sense Of Touch

Our skin consists of 3 main layers which are the epidermis, dermis, and the fatty layer.


Epidermis
- The epidermis is the outer layer of the skin, the epidermis itself is divided into three layers
- The outer most layer of the epidermis is the dead cell
The epidermis is a tough and water resistance layer that limits water loss
- Epidermis also protects the sensitive cells under it and prevents the entry of germs into your body

Dermis
- The dermis is the inner layer of your skin
There are glands, receptors and blood vessel in the dermis
- There are two glands in the dermis, which are sweat gland and sebaceous gland
- There are five receptors in the dermis, which are pain, pressure, heat, cold and touch receptors. 

Touch receptors are sensitive to a slight pressure and are located at the top of the dermis.

Pain receptors are sensitive to pain.They are located at the top of the skin in the epidermis area to detect pain.

Heat receptors are sensitive to heat and is located in the dermis.

Cold receptors are sensitive to cold and is located in the dermis.

Pressure receptors detect pressure. For example, you feel pressure when carrying something heavy.Pressure receptors are located in the fatty layer deep into the skin.


When the receptors are stimulated, they send impulses to the brain.The brain interprates the impulses and sends them back along the nerves to the body to make a response.


Sumber: http://pmr-science.wikispaces.com/1.2+The+Sense+of+Touch