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The Five Senses; Your Sense of Smell

The structure of the receptor protein changes when it meets the odorant molecule. .
             Step 2. The associated G protein activates the enzyme adenylate cyclase.
             Step 3. the enzyme catalyses the formation of messenger molecules - cyclic adenosine monophosphate (cAMP) - from ATP in the cell.
             Step 4. cAMP opens up the Na+ ion channels; Na+ ions pass through the membrane.
             2.2 Chemoreception cont'd.
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             How do we recognise different smells? .
             Scientists believe that odorant receptors are similar to hormone receptors and to receptors used in vision. A deeper understanding of odorant receptors may well help research into receptors in other fields. .
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             Current theories.
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             Theories on chemoreception attempt to explain how we perceive odours and how we can tell one odour from another. At present our understanding of chemoreception is not well advanced and, in the absence of substantial, hard scientific evidence, theories are based on ideas of how the process might work. Another difficulty is that the evidence we do have relates to the observation of the whole process, from the evolution of an odour from its source to the consciousness of that odour in the brain. .
             Current theories of chemoreception generally make only one stage in this multi-stage process responsible for our ability to discriminate odours. Reality may be far more subtle than this. There is, for instance, mounting evidence that odour binding proteins may have a role in perception.
             One approach.
             Many current theories propose that the contact between odorant molecule and receptors is a key stage in our perception of the odour. One group of theories proposes that the protein receptor recognises the odorant molecule and binds to it in the same way that an enzyme and its substrate bind together. The ability to bind to a particular receptor may depend on the shape of the odorant molecule and on the distribution of electrical charge within it. Some scientists believe that there are primary odours, each with its own receptor, and that all smells arise from our perception of these primary odours blended in different combinations and intensities.


Essays Related to The Five Senses; Your Sense of Smell

1. Chemosensation and Chemoreceptors

Introduction In our 3rd grade in the primary school we were taught about the five primary senses; namely sight, hearing, touch, smell, and taste. Two of the five primary senses worked with each other, the smell and taste. ... Hypothesis The senses of smell and taste are regarded as one sense rather than separate senses. What we taste is actually due to our sense of smell. ... Without the sense of smell, we would only be able to recognize five tastes: sweet, salty, sour, bitter, and savory. ...

  • Word Count: 2711
  • Approx Pages: 11
  • Has Bibliography
  • Grade Level: High School

2. Tranquility

What makes my tranquility is that it comes to all my five senses. ... My five senses take place in my tranquility. ... The scent is like nothing you smelled before. ... The touch of hard pads which you kneel on to confess your sins on, which other before have done and been saved from their sins sets a different tone of feeling to your whole body. ... This giving me full known tranquility, by the time is over I cannot take it, the last sense sets in, the taste. ...

  • Word Count: 431
  • Approx Pages: 2
  • Grade Level: High School

3. Putting In Two Senses

Putting In Two Sense(s) It is said that being different is part of life, but as with many of these "parts of life," there are two extremes on the spectrum of society: being able to hold your own and depending on society to hold your hand every step of the way. ... The human body has been well equipped with five senses: sight, hearing, smell, touch, and taste, most of which are vital to one's survival. If one of the essential senses were to abruptly disappear, one's everyday world would be turned upside down and dropped into a pool of chaos: everything familiar is suddenly strang...

  • Word Count: 826
  • Approx Pages: 3

4. Ocampo

Over the years, considerable research has been conducted into our sense of smell. These studies argue that the sense of smell is the most powerful sense due to its link with our state of mind. As humans, we prefer to use our sense of smell and hearing over smell. ... We have the ability to recognize up to 10,000 separate odors but each thing we smell must be volatile in order for our senses to be able to detect and identify it ("How" Angelfire 1). ... Smell is better at this cue effect than other senses. ...

  • Word Count: 2450
  • Approx Pages: 10
  • Grade Level: High School

5. Sensory Deprivation

Which is artificially produced deprivation of all of the five physical senses - hearing, smelling, sight, taste, and touch (McGuffin 2). ... People who have been deprived of a certain sense for example sight, notice that their other senses have grown more acute. They can hear sounds, and smell things that other people with all of their senses cannot. Imagine that you were deprived of all five of your senses and you were left with nothing but thought? ... This can become the whole content of your conscious mind to an unbearable degree. ...

  • Word Count: 1436
  • Approx Pages: 6
  • Has Bibliography
  • Grade Level: High School

6. Rocking Horse Resorts

In a place of purity like this just taking in one breath is an experience for all five senses. ... The water feels silky and refreshing to your body. ... The Landscape here is a real treat for all five senses. ... The many shades of oranges and yellows give a sense of beauty that is only duplicated by the sun or by wildfire. ... These feelings I get through all my senses are so powerful, that I have yet to find another place that even closely compares. ...

  • Word Count: 870
  • Approx Pages: 3
  • Grade Level: High School

7. Hallucinogens

Hallucinogens powerfully affect the brain, distorting the way our five senses work and changes our impressions of time and space. ... Your brain controls all of your perceptions; the way you see, hear, smell, taste, and feel. ... Chemicals like hallucinogens can disrupt this communication system, and the results are changes in the way you sense the world around you. ... They can include: seeing, hearing, touching or smelling things in a distorted way or that don't exist, colors become very bright, sounds become sharper, mixing of the senses (you hear colors or see sounds), changed sense o...

  • Word Count: 1490
  • Approx Pages: 6
  • Has Bibliography
  • Grade Level: High School

8. dreams

In your lifetime, you would've spent about 6 years of it dreaming. ... Simply because you do not remember your dream does not mean that you did not dream. 5. ... But vision is not the only sense that constitutes a dream. Sounds, tactility, and smell become hypersensitive for the blind and their dreams are based on these senses. 8. Five minutes after the end of the dream, half the content is forgotten. ...

  • Word Count: 525
  • Approx Pages: 2
  • Grade Level: High School

9. Learning

I would use positive reinforcement and the operant would be that in the sense that if they do all of their homework they would get a treat or reward. ... Sensory memory is compiled information from your five senses, it is only stored for a short amount of time and is kind of the "here and now- memory. ... It takes bits of information obtained from our five senses and if it catches your attention (say something that looks or smells good) it is then transferred to your short-term memory. Your short-term memory houses both information from your sensate and long term memory...

  • Word Count: 1299
  • Approx Pages: 5
  • Grade Level: High School

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