Answer:
short answer- an active ingredient in spicy food.
Explanation:
long answer- An ingredient in spicy food, capsaicin binds to receptors in our mouths called VR1 receptors. After the capsaicin binds to the receptors, the sensory neuron is depolarized, sending a signal to the brain that something is spicy.
Capsaicin binds to a special class of vanilloid receptor inside our mouth called VR1 receptors. After capsaicin binds to these receptors, the sensory neuron is depolarized, and it sends along a signal indicating the presence of spicy stimuli.
