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Cubiertas de los huevos: la corona radiada y la zona pelúcida

ID: ANH12063S105es
MEDICAL ANIMATION TRANSCRIPT: El huevo está cubierto por una capa de células llamada corona radiata. El esperma debe empujar a través de esta capa para llegar a la capa exterior del óvulo, la zona pelúcida. Cuando el espermatozoide llega a la zona pelúcida se une a unos receptores especializados de espermatozoides en la superficie, lo que causa que sus acrosomas liberen enzimas digestivas, lo que permite que los espermatozoides se introduzcan en la capa. Dentro de la zona pelúcida hay un espacio estrecho y lleno de líquido, justo afuera de la membrana de la célula del óvulo. El primer espermatozoide en hacer contacto, fertiliza el óvulo.

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