SENSATION AND PERCEPTION
VISION SENSORY AND PERCEPTUAL PROCESSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The papillae pass the tastant onto the taste bud
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It causes a chemical reaction within our brain
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The gustatory hair traps it and begins the process of perception
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It stays in our receptors until the taste buds are ready to receive the information
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Detailed explanation-1: -Tastants enter the body and are dissolved in saliva. Taste cells are located within taste buds, which are found on three of the four types of papillae in the mouth.
Detailed explanation-2: -Tastant binding to the receptor activates downstream secondary messenger pathways leading to depolarization and increased intracellular calcium in TRCs, that in turn innervate the gustatory cortex in the brain.
Detailed explanation-3: -Taste buds are onion-shaped structures of between 50 and 100 taste cells, each of which has fingerlike projections called microvilli that poke through an opening at the top of the taste bud called the taste pore. Chemicals from food termed tastants dissolve in saliva and contact the taste cells through the taste pore.
Detailed explanation-4: -Circumvallate, fungiform, and foliate papillae are the structures that house the taste buds. Taste buds are a collection of differentiated epithelial cells that respond to the 5 basic tastes and transmit that information to the CNS. Filiform papillae are trigeminal and sense touch, temperature, and pain.
Detailed explanation-5: -Each taste bud contains three distinct cell types, of which Type II cells carry various G protein-coupled receptors that can detect sweet, bitter, or umami tastants, while type III cells detect sour, and likely salty stimuli.