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Human special senses and their functions
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Special senses in human
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Chapter 15 - The Urinary System
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Class notes Anatomy And Physiology (HAPP111) Essentials of Human Anatomy & Physiology, Global Edition, ISBN: 9781292216201
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Human special senses and their functions
In human, the five special senses are olfaction, gustation, equilibrium vision and hearing.
In other words, the five special senses are the tools used by humans in the perception of the
world. For instance, vision are used for seeing, hearing for audio and vibrations , smell for
smelling somatosensation for touch and tasting for identifying tastes . In other words, without the
five special senses, humans are unable to perceive the world in its different aspects. The five
special senses send signals to the brain about the environment of individuals (Aspinall et al. 55).
The brain interprets the signals and activates the relevant parts of the body to react based on
changes of the environment or the perception of factors in one’s environment. The five special
senses determine the operation of the body and without them human body would not be
functional in relations to its environment.
The main function of the first special sense; olfaction or smell is to enable one to identify
chemicals. The identification of chemicals occurs when the particle travel through the nose
enabling the memory to activate the part of the brain that enables one to identify the chemical
(Aspinall et al. 55). Once the chemical has been identified through the aid of the brain, the
relevant parts of the body react appropriately in response to the stimuli. For instance, if the
chemical is harmful to the body or has a bad smell, the brain will react by enabling one to block
the nostrils and also flee the area where the bad smell has been identified. The second special
sense is taste that enables one to identify how a substance put in the mouth tastes (Aspinall et al.
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