| 单词 | light reflex |
| 释义 | light reflex [`līt ´rē´fleks] PHYSIOLOGY 1. The postural orientation response of certain aquatic forms stimulated by the source of light; receptors may be on the ventral or dorsal surface. 2. The response in which the pupil dilates when light levels are lowered, and constricts when light levels are raised. |
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