CONE (RETINA)
\kˈə͡ʊn ɹˈɛtɪnə], \kˈəʊn ɹˈɛtɪnə], \k_ˈəʊ_n__ ɹ_ˈɛ_t_ɪ_n_ə]\
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One of the two photoreceptor cell types in the vertebrate retina. In cones the photopigment is in invaginations of the cell membrane of the outer segment. Cones are less sensitive to light than rods, but they provide vision with higher spatial and temporal acuity, and the combination of signals from cones with different pigments allows color vision.
By DataStellar Co., Ltd
Word of the day
Snake's-head
- Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head.