1. By: Fahad Al Thani

2.  Nervous system is for the senses and its composed of specialized cells called neurons that communicates information to and from the brain.  touch is actually a grab bag of various somatic senses.  Touch information is processed in the postcentral gyrus.

3.  Touch is the concept of physical contact between two objects.  In everyday experience, touch can be perceived as one object applying physical force upon another.  The term touch is often abstracted to express feelings of certain emotions.

4.  Contrary to what you may have heard, the tongue is not divided into taste sections.  The five acknowledged tastes are sweet, sour, salty, bitter, and umami.  The sense of taste sends message to to the brain if its hot or cold and the nervs send the message back to the brain.

5.  Your tongue and the roof of your mouth are covered with thousands of tiny taste buds. It includes the salts/sweets, bitter, sour, sour and not many taste buds.  When you eat something, the saliva in your mouth helps break down your food.  We have almost 10,000 taste buds inside our mouths; even on the roofs of our mouths.

6.  Smell is a very direct sense.  In order for you to smell something, molecules from that thing have to make it to your nose.  Everything you smell, therefore, is giving off molecules whether it is bread in the bakery, onions, perfume, a piece or fruit.

7.  Our sense of smell is connected really well to our memory.  If your nose is at its best, you can tell the difference between 4000 10,000 smells!  Humans have seven primary odors that help them determine objects.

8.  Hearing begins with the ears, which receive sounds and send them to the auditory cortex, near the back of the brain from processing.  The eardrum passes along sound vibrations to the ossicles, the three smallest bones in the human body.  The sensory organ for hearing is the Organ of Corti.

9.  Like your other sense organs, your ears are extremely well-designed.  When an object makes a noise, it sends vibrations (better known as sound waves) speeding through the air  Children have more sensitive ears than adults. They can recognize a wider variety of noises.

10.  The sense of seeing has actually two parts the reflection and refraction.  The reflection is when you have a sun hitting two something shiny and that reflects to anywhere you want.  The refraction works when you put something to the water and then it looks like two pieces.

11.  www.wisegeeks.com www.wisegeeks.com  www.librarythinkquest.com www.librarythinkquest.com  www.howstuffworks.com www.howstuffworks.com