Olfactory Senses

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This is a test of the olfactory senses. Olfactory senses (sense of smell) are due to the olfactory cells being activated by odiferous molecules coming in contact with the olfactory vessels located in your nasal cavity. The nasal cavity is a tube that functions as a pathway that leads odiferous molecules to the olfactory epithelium. This epithelium is made of three different types of cells. The first type of cell is a basal cell, a stem cell that can later form into the receptor cells that line the nasal cavity. The second type of cell is called a supported cell, a cell that contains microvilli and secretory granules. The third type of cell is the receptor cell, neurons that receives a sends the signals activated by odors. (Vokshoor, 2013) The nasal cavity houses over one hundred million olfactory receptors. These olfactory receptors have the ability to recognize and distinguish approximately ten thousand different odors. One olfactory receptor has the ability to recognize ten different odors. When an olfactory receptor comes in contact with an odor the neuron within the cell excites. The neuron sends a signal to neurons in the olfactory bulb. Large amounts of chemicals bind to a wide variety of receptors. Multiple receptors can recognize a single odor. Combinations of receptors recognize different odorants. The identity of different odors are encoded, or represented, by a “Combinational coding scheme”. (Vokshoor, 2013) Each of these receptors send messages to the olfactory bulb where the scent is recognized. The olfactory bulb is located inferior to the frontal lobe. This bulb contains several synaptic layers. (Vokshoor, 2013) The olfactory senses have been a large part in survival for animals in the past and present. Animals use ... ... middle of paper ... ...’s olfactory senses’ ability to distinguish between artificial and natural scents. It also tested which fragrances were the easiest and most difficult to distinguish, as well as if gender played a roll in distinguishing scents. It was found that humans are indeed capable of distinguishing between artificial and natural scents. The results showed that women have a stronger ability to distinguish a difference in scents than males. Works Cited Melville, Kate, Rusty Rockets, and Will Parker. "How Does The Nose Know - An Alphabet Of Odor." How Does The Nose Know - An Alphabet Of Odor. SCI GOGO, 22 Mar. 2013. Web. 25 Nov. 2013. . Vokshoor, Amir. "Olfactory System Anatomy." Olfactory System Anatomy. Medscape, 15 Sept. 2013. Web. 26 Nov. 2013. .
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