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The Other Senses - Coggle Diagram
The Other Senses
Taste
Taste buds are formed by groupings of taste receptor cells with hair-like extensions that protrude into the central pore of the taste bud
Taste buds have a life cycle of ten days to two weeks,
Taste molecules bind to receptors on this extension and cause chemical changes within the sensory cell that result in neural impulses being transmitted to the brain via different nerves,
Taste information is transmitted to the medulla, thalamus, and limbic system, and to the gustatory cortex, which is tucked underneath the overlap between the frontal and temporal lobes
Smell
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Small hair-like extensions from these receptors serve as the sites for odor molecules dissolved in the mucus to interact with chemical receptors located on these extensions
Once an odor molecule has bound a given receptor, chemical changes within the cell result in signals being sent to the olfactory bulb
From the olfactory bulb, information is sent to regions of the limbic system and to the primary olfactory cortex, which is located very near the gustatory cortex
Touch, Thermoception, and Nociception
A number of receptors are distributed throughout the skin to respond to various touch-related stimuli
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In addition to the receptors located in the skin, there are also a number of free nerve endings that serve sensory functions.
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Sensory information collected from the receptors and free nerve endings travels up the spinal cord and is transmitted to regions of the medulla, thalamus, and ultimately to somatosensory cortex, which is located in the postcentral gyrus of the parietal lobe.
The Vestibular Sense, Proprioception, and Kinesthesia
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In addition to maintaining balance, the vestibular system collects information critical for controlling movement and the reflexes that move various parts of our bodies to compensate for changes in body position. Therefore, both proprioception (perception of body position) and kinesthesia (perception of the body’s movement through space) interact with information provided by the vestibular system.