an end organ or a group of end organs of sensory or afferent neurons, specialized to be sensitive to stimulating agents
noting or pertaining to a situation in which one organ performs part of the functions normally performed by another
a region where nerve impulses are transmitted and received in the brain
a bitter, alkaline, yellow or greenish liquid, secreted by the liver, that aids in absorption and digestion
a histidine-derived amine compound that is released mainly by damaged mast cells in allergic reactions, causing dilation and permeability of blood vessels and lowering blood pressure
a progressive wave of excitation over a nerve or muscle fiber that has a stimulating or inhibitory effect