The New Encyclopædia Britannica, Volume 2Encyclopædia Britannica, 1992 - 32 pages |
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Page 141
... lens system . In order to utilize efficiently a large image , the retinas of diurnal animals have localized areas with many pho- toreceptors ; i.e. , a higher receptor density . The receptors in this area , called the area centralis ...
... lens system . In order to utilize efficiently a large image , the retinas of diurnal animals have localized areas with many pho- toreceptors ; i.e. , a higher receptor density . The receptors in this area , called the area centralis ...
Page 177
... lens and also for the cornea , both of which are devoid of blood vessels ; the steady renewal and drainage serve to bring into the eye various nutrient substances , including glucose and amino acids , and to remove waste products of ...
... lens and also for the cornea , both of which are devoid of blood vessels ; the steady renewal and drainage serve to bring into the eye various nutrient substances , including glucose and amino acids , and to remove waste products of ...
Page 199
... lens and cornea , which are avascular ( without blood vessels ) . Inflammation . Inflammations of the uveal tract are al- ways potentially serious because of the secondary effects they may have on the retina and the lens . In most cases ...
... lens and cornea , which are avascular ( without blood vessels ) . Inflammation . Inflammations of the uveal tract are al- ways potentially serious because of the secondary effects they may have on the retina and the lens . In most cases ...
Contents
SAN FRANCISCO | 1 |
SÃO PAULO | 6 |
SCANDINAVIAN LITERATURE | 10 |
Copyright | |
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activity ancient animals artists auditory axiom basilar membrane behaviour bipolar cells body brain bronze called canal carved cause central centre century changes chemical chemoreception classical cochlea colour cones cornea culture dreams early effect example female Figure frequency function Greek groups hair cells hearing hertz homosexual human important impulses increase individual influence inner ear insects kami later layer lens light literature male mammals mechanical Mechanoreception membrane millimetres modern movement muscle nature nerve fibres NREM occur odour olfactory optic organs outer percent period photoreceptor photoreceptor cells physiological pigment plays produced receptors relief REM sleep response retina rhabdom rhodopsin rods role Roman Rome São Paulo sculpture sense sensitivity sensory sexual Shakespeare Shinto Sikh skin slavery slaves social societies sound species statocyst stimulation structure studies style surface taste temperature theory tion types usually vertebrates vision visual women