Terceira Pálpebra: Qual a Importância no Mundo Animal?

Você e seu amigo

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Você sabia que existe uma terceira pálpebra em algumas espécies do reino animal? Basicamente, a sua função é de proteção.

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No ambiente natural há uma grande quantidade de partículas de sujeira que pode agredir os olhos.

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E, como para a maioria dos animais a visão é um sentido importantíssimo para a sobrevivência, a terceira pálpebra se mostra fundamental.

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No ambiente natural há uma grande quantidade de partículas de sujeira que pode agredir os olhos.

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Em alguns animais a membrana é bem transparente. Mas na maioria das espécies é imperceptível.

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A terceira pálpebra, também conhecida como membrana nictitante, é uma característica única de algumas espécies de animais.

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Basicamente, este é um tecido que fica entre a pálpebra inferior e a córnea, que é uma ótima adaptação dos animais ao meio.

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Isso porque é possível fechar a membrana caso seja necessário proteger o globo ocular e, também promove uma boa hidratação, sem impedir a visão.

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FIQUE INFORMADO!

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