6. Which is the part of the
human visual system where
the receptors that sense light,
i.e., the photoreceptor cells,
are located? How do those
cells work?

Gap-fill exercise

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The photoreceptor cells form retina,
a lamina that the internal
posterior region the eyeball.The
photosensitive cells the retina are
divided two types: the cone
and the rod cells. cells have
pigments that specific light wave
ranges () and trigger action
potentials by the optical
nerves the visual area of brain.