The light-sensitive part of the receptor cells is next to this, so they get direct and reflected light.

Neurons fire signals to receptor cells that are no longer there.

It is the differential responses of these receptor cells that enable color vision.

This receptor cell is sensitive to the stretching of the membrane.

Tropotaxis: The organisms having paired receptor cells show this kind of movement.

Blue and green receptor cells have more shallow fibers.

A stimulus is an "energy change that affects an organism through its receptor cells."

This high energy light can be damaging to receptor cells.

Another possible mechanism underlying tinnitus is damage to the receptor cells.

These eyes are able to create a focused image on the retina, which has up to four layers of receptor cells in it.