Given a sentence in Spanish, provide an equivalent paraphrased translation in Japanese that retains the same meaning both through the translation and the paraphrase.
Example: La temporada de la NBA de 1975: 76 fue la 30ª temporada de la National Basketball Association.
Example solution: 1975  -  76年の全米バスケットボール協会のシーズンは、NBAの第30シーズンでした。
Example explanation: This is a correct and accurate translation from Spanish to Japanese because the translated paraphrase retains the main message that between the years 1975-1976, the 30th NBA season occurred.

Problem: Una fibra sensorial especializada es un órgano nuclear contenido en un músculo.

Solution: 特殊な感覚鎖繊維は筋肉内に含まれる核器官です。