lateral line, lateral line organ - sense organs of fish and amphibians; believed to detect pressure changes in the water

organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function

enteroceptor, interoceptor - any receptor that responds to stimuli inside the body

exteroceptor - any receptor that responds to stimuli outside the body

pineal eye, third eye - a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles

baroreceptor - a sensory receptor that responds to pressure

chemoreceptor - a sensory receptor that responds to chemical stimuli

thermoreceptor - a sensory receptor that responds to heat and cold

eye, oculus, optic - the organ of sight

ear - the sense organ for hearing and equilibrium

organ of hearing - the part of the ear that is responsible for sensations of sound

inner ear, internal ear, labyrinth - a complex system of interconnecting cavities; concerned with hearing and equilibrium

semicircular canal - one of three tube loops filled with fluid and in planes nearly at right angles with one another; concerned with equilibrium

stretch receptor - a receptor in a muscle that responds to stretching of the muscle tissue

papilla - a small nipple-shaped protuberance concerned with taste, touch, or smell; "the papillae of the tongue"

sensory system - the body's system of sense organs