The New Encyclopædia Britannica, Volume 2Encyclopædia Britannica, 1992 - 32 pages |
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Page 146
... photoreceptor cell , resemble similar lamellate structures in certain molluscan and vertebrate photore- ceptors ; it is presumed by some investigators , therefore , that the lamellate structures of Pleurobrachia may be photoreceptors ...
... photoreceptor cell , resemble similar lamellate structures in certain molluscan and vertebrate photore- ceptors ; it is presumed by some investigators , therefore , that the lamellate structures of Pleurobrachia may be photoreceptors ...
Page 147
... photoreceptor , responds to a decrease in illumination ; the proximal retina , with a microvillar photoreceptor , re- sponds to increasing illumination . The cephalopod retina has long cylindrical photoreceptor cells with rhabdomeres ...
... photoreceptor , responds to a decrease in illumination ; the proximal retina , with a microvillar photoreceptor , re- sponds to increasing illumination . The cephalopod retina has long cylindrical photoreceptor cells with rhabdomeres ...
Page 148
... photoreceptor cells develop from embryonic epithelial cells that send out axons - threadlike extensions - that grow into the central nervous system . Often the epithelial cells contain cilia , and the photoreceptors develop from the ...
... photoreceptor cells develop from embryonic epithelial cells that send out axons - threadlike extensions - that grow into the central nervous system . Often the epithelial cells contain cilia , and the photoreceptors develop from the ...
Contents
SAN FRANCISCO | 1 |
SÃO PAULO | 6 |
SCANDINAVIAN LITERATURE | 10 |
Copyright | |
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