Sense of Smell (PowerPoint)

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					                   Cheyenne Wright
                      Sara Rowan




Sense of Smell
   How you Smell
           How do you smell?
*Cilia, the little hairs in your nose.
*Cilia, filters things that enter your nose.
*After the air passes your nose, it goes through a
  thick layer of mucus, and then to the olfactory
  bulb.
*There the smells are recognized, each smell
  molecule fits into a nerve like a key in a door.
*Then, the cells send a signal along olfactory
  nerve to the brain.
*At the brain the smells are interpreted as things
  say for instance fresh flowers, or moldy cheese.
This picture is demonstrating, how your
nose takes in a smell and processes it
through the olfactory bulb and it sends it
through the olfactory nerve and how you
sense it. This picture also shows you
how you detect taste.
          The Olfactory Bulb
*The olfactory bulb is the most forward part
 of the brain. In humans, the olfactory bulb
 is on the bottom side of the brain.
*The olfactory bulb is supported and
 protected by the cribriform plate of the
 ethmoid bone.
*The bulb is divided into two distinct
 structures: the main olfactory bulb and the
 accessory olfactory bulb.
                    Fun Facts
*If your nose is in peak performance you can tell the
  difference between 4000-10,000 smells.
*As you grow older, your sense of smell gets worse.
  Children are likely to have much more subtle
  senses of smell than parents or grandparents.
*Bloodhounds smell at least 1000 times better than
  humans.
*Whales and Dolphins have a blowhole instead of 2
  nose holes.
*Astronauts in space tend to lose their sense of smell
  and taste. Because of the lack of gravity, their
  sinuses fill up with fluid, causing stuffiness similar
  to a cold.
* The smell of lavender can help with insomnia and
  sleep disorders.
            Summary
*The Olfactory bulb controls the
 sense of smell, in the frontal lower
 lobe of the brain near the Broca’s
 Area. Smell is the most
 memorable trigger sense of the
 brain.
                  Citations
• http://www.everythingsmells.com/smellyfacts.ht
  ml
• www.CartoonStock.com
• http://yucky.discovery.com/flash/body/pg000150.
  html
• http://library.thinkquest.org/3750/smell/smell.htm
  l
• www.thesoslab.com/SexandScent.asp
• www.38lemon.com/dailyjournal.php?y=2007&m
  =11&d=21
• www.uni-kl.de/.../lohr/Projects/projects.html

				
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posted:8/23/2011
language:English
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