Senses

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THE SENSES Hilgard morgan and Sartain explain that there are more than eight senses that we use to explore and learn about the world.Each of these senses has a specific sense organ within which are receptor cells or receiving mechanisms that are sensitive to certain stimuli in the environment. The Eye Is the organ of vision, is sometimes compared to a camera lens because it works roughly the same way as the latter which focuses images of objects at various distances o the film as it moves toward or away from the place of the film. The lens of the eye focuses light images on a sensitive surface.This surface in the eye is the retina,which is composed of rods and cones. Rods which are cylindrical and number about 100…show more content…
Hilgard says that the insects and some higher animals secrete chemicals known as pheromones that float through the air to attract members of the species.These chemicals serve a communicative function. The skin There are four skin or cutaneous senses:pressure,pain,warmth,and cold.The sense organs for the cutaneous senses are very small free nerve endings in the skin.When they are stimulated,nerve impulses are tripped off and they travel to the spinal cord and brain. These receptor organs are not equally distributed in the skin.From a numbe of studies,it is noted that pain spots are generally most numerous.Next most numerous are the pressure spots.A much smaller number of spots for cold have been found,while the least numerous are the warmth spots. Another finding is that sensitive spots do not seem to be stable.There is difficulty encountered in stimulating exactly the same small spot that was touched before the second time.it could be included that different areas of the skin have different sensitivities to the four basic qualities of pain,pressure,cold,and warmth. Our cutaneous senses are said to be our reality senses such that when we feel something with our skin,we are convinced that something is really
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