Sense of Taste

*The human tongue has 10,000 tiny taste buds.
*The part of the tongue that detects bitterness is 8,000 times more
sensitive than part of the tongue that detects sweetness.

*Some insects use parts of their bodies (other than their mouth) to taste food.
Butterflies taste food with their mouth and legs
Ants taste food with their mouths and legs.
Taste-sensitivity to chemicals in solutions
Smell-Sensitivity to chemicals in gaseous state.

 

Sensory Organs

• The brain contains about 100 billion nerve cells.
• The total length of all the nerves in your body is about 75km.
• Nerve impulses travel from the eyes to the brain at a speed of 400 km/h

 

Sense of Touch

The Ecriture Nocturne was a system of raised dots developed for the French military as a way of communication after dark. At the age of 15, Louis Braille simplified this system to a set of patterns of 6 dots.