The possibility of regenerating the sensory cells of the inner ear, so easily damaged by exposure to loud sound, has just moved a step closer.

Although sparked by physical causes, in most cases the disorder ultimately involves malfunctioning sensory cells, or a disruption to the nerves in the auditory pathway or the brain.

Sponge larvae differentiate sensory cells which respond to stimuli including light, gravity, and water movement, all of which increase the fitness of the organism.

Finally, this receptor potential leads to action potential fired by sensory cells.

This layer contained canals which were connected to sensory cells deeper in the skin.