post by – penserstudypoint.com
Inside our body, all the cavities such as the mouth, throat, stomach, intes tines, ears, chest, and sinuses are lined with cells called epithelial cells.
These cells contain nerve endings that send impulses which the brain identifies as feelings of heat, cold, or pain.
Outside the body, the skin is the organ of feeling.
It has more than 16,000 nerve endings, which are also called receptors that detect heat or cold, and around 4 million nerve end ings that transmit feelings of pain!
Your nervous system depends on these receptors that are embedded in your skin, to sense the outside world.
Our hands, feet, and lips all have extra receptors making those areas even more sensitive, and there are actually different types of receptor cells for each type of sensation.
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