Que es el seno esfenoidal?

Tipo de seno paranasal (un espacio hueco en los huesos alrededor de la nariz). Hay dos grandes senos esfenoidales en el hueso esfenoides, que está detrás de la nariz, entre los ojos. Los senos esfenoidales están revestidos de células que producen moco para evitar que la nariz se seque. Agrandar.

In English: A type of paranasal sinus (a hollow space in the bones around the nose). There are two large sphenoid sinuses in the sphenoid bone, which is behind the nose between the eyes. The sphenoid sinuses are lined with cells that make mucus to keep the nose from drying out. Enlarge.

Question in english: What is the sphenoid sinus?

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answer; i believe the correct answer is (secondary prevention);