These are all receptors that react to certain kinds of stimuli. The chemoreceptors react when there are changes in chemical concentrations within the body; the mechanoreceptors detect pressure or distorted stimuli; and the nocioreceptors send signals of pain to the spinal cord and brain.
Spicy food actually does not have a specific location in the taste buds of the tongue. This is the reason why it is not considered a flavor but rather a sensation. Spicy food stimulates the release of chemicals and signals to the brain which are detected by these different kinds of receptors.
One of NIAID’s greatest success stories is that its research led to the development of numerous antiretroviral drugs to treat HIV/AIDS, turning what was once a uniformly fatal disease into a manageable chronic condition for many. NIAID is working to find new and more effective therapeutic products, drug classes, and combinations as well as safe and effective treatments for related co-infections and complicatio
its the third option, it describes it very accurately.
The energy needed to raise the temperature of 1 kilogram of water through 1 °C, equal to one thousand small calories and often used to measure the energy value of foods