Skin, Nose and Tongue
Skin, Nose and Tongue
How do we taste things?
Taste buds
are sensory organs that are found on your tongue and allow you to experience
tastes that are sweet, salty, sour and bitter. Other senses are also used along
with the taste buds. The taste buds can only detect the difference between
sweet, salty, sour and bitter. But when you eat, other sensations heat and
cold, texture and especially smell-also help. It is these extra sensations
which help to tell the difference between different foods.
Taste buds
The taste
buds contain clusters of cells with hairs on the end. They allow different
tastes to be recognized.
Cheese tastes
The taste
buds can hardly differentiate between these pieces of cheese. But the sense of
smell combines with taste to reveal the flavor.
What are taste buds?
Taste buds
are Clusters of special cells set in tiny wells in the tongue. They are so tiny
that there are 10,000 of them altogether. As you chew, tiny particles of food
dissolve in the saliva and trickle down into the taste buds. Each taste buds
are on either side of the front of the tongue, 'sour' taste buds are behind
this, and the 'bitter' taste buds are way in the back.
Where do you taste sweet and sour things?
The taste
buds are found inside tiny bumps on the tongue called papillae. The taste buds
that respond to Sweet Taste are on the tip of the tongue. The 'salt taste buds
are on either side of the front of the tongue, sour taste buds are behind
reacts to a particular kind of taste Sweet, salty, sour or bitter. if the food
contains the this; and the 'bitter taste buds are way in the back.
How do you smell?
Tiny odor
molecules drift in the air. As you breathe in, some of these molecules enter your
nose and dissolve in the mucus. Then they drift towards the upper part of the
nasal chamber. This part is packed with ten million smell receptors. These
smell receptors react the chemicals dissolved in the mucus and send messages your
brain.
How do you feel things?
The skin
helps to feel things. It is packed with different kinds of receptors that can
tell you whether things are hard or soft, hot or cold, rough or smooth to touch.
How do you know how hard someone is pushing?
When someone
touches you, the receptors in the skin send oft signals to your brain. The
harder the touch, the faster the nerves send signals.
Where can you feel things?
Sense
receptors are there in almost every part of your skin. But some places, like
your hands and face, have lots of receptors. So, they are extra sensitive. Other
places on the body the small of your back, for instance- have very few. Therefore,
they are not so sensitive.
Which parts of the body are most sensitive to heat?
The elbows
and feet are more sensitive to heat than the other parts of the body. This is
why mothers sometimes test the water for babies to make sure it is not too hot
by putting the elbow in the water.
Taste areas
The taste
buds are present on certain parts of the tongue. Different areas of the tongue
react differently to different tastes sweet, salt, sour or bitter.
'Best of luck'
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