(资料图片仅供参考)
| （1）[2]晶状体（2）虹膜 |
| 试题分析：眼的结构由眼球壁和内容物，眼球壁由外膜、中膜和内膜组成，外膜由前方的角膜（无色透明，起保护作用）和后方的巩膜（保护作用，又叫白源旁眼球）；中膜由前方的虹膜（有色素，又叫黑眼球）、中间的睫状体（内含平滑肌，能够调节晶状体的曲度）、脉络膜（含有雹陪橡丰富的毛细血管，具有营养的作用）；内膜是视网膜（有感光细胞，视觉感受器所在的部位）。内容物主要是晶状体和玻璃体，主要对光线有折射作用。图中的1是虹膜、2是晶状体、3是角膜、4是巩膜、5是脉络膜、6是视网膜、7是玻璃体。⑴眼球成像中，起主要调节作用的结构是[2]晶状体；⑵人们常把眼睛比喻成心灵乱塌的窗户，从外部观察某位同学的这扇窗户时，能观察到可随意运动的眼球前部的黑眼珠和后面的白眼珠，被称为黑眼珠和白眼珠的结构分别是虹膜和巩膜。 |
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