Olfaction or olfactory perception[1] is the sense of smell. This sense is mediated by specialized sensory cells of the nasal cavity of vertebrates‚ which can be considered analogous to sensory cells of the antennae of invertebrates. In humans‚ olfaction occurs when odorant molecules bind to specific sites on the olfactory receptors. These receptors are used to detect the presence of smell. They come together at the glomerulus‚ a structure which transmits signals to the olfactory bulb (a brain structure
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Nov. 19‚ 2012 Special Senses Through out your lifetime you have experienced the world through your senses – sight‚ sound‚ taste‚ smell‚ touch – or more accurately your special senses which include Vision‚ Audition‚ Equilibrium‚ Olfaction‚ and Gustation. After you have lived awhile your body changes so it should be no surprise that your ability to sense and perceive the world would change as well. Through senses that perceive light‚ sound‚ and smell‚ you gain so much information about
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allows us to see motions as continuous events (vs. split second) – How difficult would it be to cross Park Ave. or Main St. if our brains could not integrate information? • Taste/Gustation: – Sweet‚ Sour‚ Salty‚ Bitter‚ Umami‚ Lipids • Smell/Olfaction: >10‚000 scents/odors • Hearing: – Pitch‚ Loudness • Touch/Somatic sensation: – Pressure‚ Position‚ Roughness‚ Vibration‚ Temperature‚ Itch‚ Pain Sensory Receptors • Detect physical or chemical phenomenon • 3 types: Chemical (taste‚ smell
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Olfaction‚ taste‚ hearing‚ equilibrium‚ and vision. 6. If the level of the odor-producing chemicals dissolved in the mucus surrounding the olfactory cilia reaches a threshold‚ a receptor potential and then an action potential will be generated and passed
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Anatomy 1 Lab FINAL EXAM ** Covers exercises 13‚ 14‚ 15‚ 16‚ 17‚ 18‚ 20‚ 21‚ 22‚ 23‚ 24‚ 25‚ 26‚ 27** Terms – Intro to Sensory Receptors (Lab 24) General senses – touch‚ pressure‚ changes in temperature‚ pain‚ blood pressure and stretching Special senses – taste‚ smell‚ sight‚ hearing‚ balance Punctate distribution – uneven distribution of sense receptors Stimuli are classified by type (modalities) such as light‚ heat‚ sound‚ pressure and specific chemicals Receptors – receiving units in
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Chemical Senses Jaime Schildt PSY345 March 30‚ 2015 Professor Chandler‚ Taleshia L. Chemical Senses Have you ever stepped into a room that is saturated with the sweet smell of the most delicious desserts? One can only imagine biting into one of the pieces of pie and have it taste just like heaven. Odds are‚ the food that you are smelling would probably taste just as good as it smells. However‚ can you imagine biting into this perfect pie that smells so wonderfully delicious only to have your taste
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long a person could continuously smell something that was placed under their nose. Humans tend to adapt to certain smells in their lives. A woman often cannot smell her perfume after wearing it continuously. The last thing we tested was taste and olfaction- if a person could taste something without the use of smell. There is a strong relationship between taste and
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Chapter 15 The Special Senses Olfaction A. 1. Olfactory epithelium Specialized cells lining the olfactory recess 2. Olfactory bulbs (#1) Axons of olfactory neurons project through the cribriform plate (#1) to these structures Where the olfactory nerves synapse with mitral & tufted cells 3. Olfactory vesicles bulbous enlargements of the dendrites of olfactory neurons 4. Olfactory hairs Have chemoreceptors (#5) that bind to odorants‚ resulting in action potential production 5. Basal cells
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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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1.Methyl mercaptan is used to give natural gas its distinctive odor. 2.Yes they can regenerate since there are stem cells (i.e. basal cells) present. These are the only neurons that commonly regenerate. 3.Dan will not be able to taste normally if the olfactory epithelia are damaged‚ just as a cold reduces taste sensation. Input from the nasal receptors enhances flavor analysis. 4.Although debris did not enter his eyes during the explosion‚ there was intense light and heat from the explosion that
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