Senses 

According to the Oxford Dictionary On-line a sense is a faculty by which the body perceives an external stimulus; 

Sight -From the moment you wake up in the morning to the time you go to sleep at night, your eyes are acting like a video camera. Everything you look at is then sent to your brain for processing and storage much like a hard drive on a computer. 




Touch  -  The sense of touch is found all over. This is because your sense of touch starts in the bottom layer of your skin called the dermis. The dermis is filled with many tiny nerve endings which carries information about the things which your body comes in contact. They do this by carrying the information to the spinal cord, which sends messages to the brain where the feeling is registered.



Taste  - Your tongue and the roof of your mouth are covered with thousands of tiny taste buds. When you eat something, the saliva in your mouth helps break down your food. This causes the receptor cells located in your tastes buds to send messages through sensory nerves to your brain. Your brain then tells you what flavours you are tasting.Your taste buds can recognize four basic kinds of tastes: sweet, salty, sour, and bitter. The salty/sweet taste buds are located near the front of your tongue; the sour taste buds line the sides of your tongue; and the bitter taste buds are found at the very back of your tongue.



Hear- 
Ears help  to hear sounds, but what you probably did not know is that your ears also help you to keep your balance.When an object makes a noise, it sends sound waves. These vibrations are then funnelled into your ear canal by your outer ear. As the vibrations move into your middle ear, they hit your eardrum and cause it to vibrate as well. This sets off a chain reaction of vibrations. Your eardrum, which is smaller and thinner than a nail, vibrates the three smallest bones in your body: first, the hammer, then the anvil, and finally, the stirrup. The stirrup passes the vibrations into a coiled tube in the inner ear called the cochlea which then allows you to hear the sound.




Smell-  Your ability to smell comes from specialized sensory cells, called olfactory sensory neurons, which are found in a small patch of tissue high inside the nose. The sense of smell and taste are linked and a part of a system called the chemosensory system, are highly specialized sensory systems of which taste, smell  These systems detect a variety of soluble and volatile stimulants with a range of biological effects on feeding, reproduction, social interactions and mood.