All of the above. A neurotransmitter causes a neuron's membrane to depolarize. This means the neuron a. is inhibited. The nervous system gets overly excited. You may go into a coma.
Pheromones produced by the opposite sex, affect our reproductive cycles.
Pheromones are detected by a. olfaction. Cigarettes smoking can impair your a. sense of taste. Your tongue is more sensitive to low concentrations than your nose. Your tongue detects more kinds of substances than your nose. Your olfactory receptors are made of exposed neurons.