In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.

Q: El troncoencéfalo o el tronco del encéfalo es la parte del Sistema Nervioso formada por

A: The brainstem or brainstem is the part of the Nervous System formed by
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Q: ¿En cuál de los fármacos con actividad antiviral aparece la base púrica denominada guanina?

A: In which of the drugs with antiviral activity does the purine base called guanine appear?
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Q: Está bajo control del eje hipotálamo-hipofisario la secreción de

A:
It is under the control of the hypothalamic-pituitary axis the secretion of
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