title: The visual process: Excitatory mechanisms in the primary receptor cells.
mesh_terms: D000818:Animals; D001001:Anura; D003386:Brachyura; D002118:Calcium / Q000378:metabolism; D002462:Cell Membrane; D002467:Cell Nucleus; D010856:Columbidae; D003593:Cytoplasm; D049832:Decapodiformes; D004553:Electric Conductivity; D008564:Membrane Potentials; D008974:Mollusca; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology*; D011188:Potassium / Q000378:metabolism; D051381:Rats; D012168:Retinal Pigments / Q000502:physiology; D012413:Rubidium / Q000378:metabolism; D012964:Sodium / Q000378:metabolism; D013569:Synapses; D001468:Thoracica; D014426:Turtles; D014882:Water-Electrolyte Balance
chemical_list: D012168:Retinal Pigments; D012964:Sodium; D012413:Rubidium; D011188:Potassium; D002118:Calcium