SENSE ORGANS RECEPTORS (Sense organs) * Transducers of specific forms of kinetic energy * Change mechanical‚ electrical‚ thermal‚ chemical‚ or radiant energy into nerve impulses in sensory neurons Two major categories: * GENERAL RECEPTORS * Often exist as individual cells or receptor units * Widely distributed throughout the body * Most numerous such as: * touch‚ temperature‚ and pain: and * to initiate various reflexes necessary for maintaining
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Chemical Senses OLFACTION The sense of smell. Begins with the detection of molecules suspended in the air Olfactory stimuli Must be soluble in fat Taken through the nostrils and circulated within the nasal cavities connected to the nostrils. Olfactory epithelium Thin sheet of cells which contain neural receptors for olfaction Contains olfactory receptor cells and glia-type support cells that produce mucus Also contains basal cells which give rise to new receptors when needed Olfactory
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different experiences‚ can’t they be felt at the same time? Can’t we hear‚ touch‚ smell and taste while seeing? Have you ever thought how this happens? You know that we get information about the changes in the environment through the sense organs. What are the sense organs we have? What is the function of each? Prepare a note on it. ..................................................................... Let us examine the parts of the eye. Make a list of those you know. — — — Pupil Retina
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before we learned how to use language‚ reason‚ or emotions to further our knowledge‚ we used our senses. As toddlers we used our sight‚ smell‚ taste‚ touch‚ and hearing to make sense of our surroundings. The evolution of knowledge is mostly because of sense perception. The most primitive versions of ourselves‚ for example the cavemen‚ heavily survived off of sense perception alone. They knew by their senses that certain plants‚ animals‚ weather‚ etc. separated life and death. Now scientists and inventors
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Our senses enable us to make sense of the world around us; they make our environment enjoyable by stimulating our desire to eat giving the body the vital nutrients it needs. They can also alert us to a fire before we see the flames‚ detect dangerous fumes and smell and taste rotten foods. Out of the five senses‚ it seems like taste is one of the simplest. There are no cones; rods or lenses‚ there are no tympanic membranes or miniscule bones. Our sense of smell in responsible for about 80% of
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Through research I discovered that there are animals that have senses that by far exceed our five human senses. One of the animals would be the bat that we spoke about in class. Bats avoid obstacles and nab insects on the wing by emitting ultrasonic squeaks and interpreting the echo the sound waves make after bouncing off objects in the environment. This is called "echolocation‚" but bats aren’t the only animals that use echolocation. Dolphins also use echolocation to navigate themselves in murky
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scent is one of the most powerful senses and is strongly linked to memory and emotion. The intricate physiology of human brains creates a complicated olfactory system that links
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Assignment 1 Economics: Making Sense beyond Common Sense Workers and the Economy Abstract This essay will provide a meaning to the subject matter of economics and attempt to answer the question “What role does the division of labour play in defining this subject matter?” I will do this by defining the subject matter of economics and the division of labour. I will then refer to the opinions of two theorists‚ Emile Durkheim and Karl Marx and their perspectives on
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skin contains numerous sensory receptors which receive information from the outside environment. The sensory receptors of the skin are concerned with at least five different senses: pain‚ heat‚ cold‚ touch‚ and pressure. The five are usually grouped together as the single sense of touch in the classification of the five senses of the whole human body. The sensory receptors vary greatly in terms of structure. For example‚ while pain receptors are simply unmyelinated terminal branches of neurons‚
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SIXTH SENSE TECHNOLOGY 1.INTRODUCTION Although miniaturized versions of computers help us to connect to the digital world even while we are travelling there aren’t any device as of now which gives a direct link between the digital world and our physical interaction with the real world. Usually the information’s are stored traditionally on a paper or a digital storage device. Sixth sense technology helps to bridge this gap between tangible and non-tangible
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