glandula vestibularis major

great·er ves·tib·u·lar gland

one of two mucoid-secreting tubuloalveolar glands on either side of the lower part of the vagina, the equivalent of the bulbourethral glands in the male; ensheathed with vestibular bulbs by ischiocavernosus muscles. Thus, erection and concurrent muscle contraction cause secretion into the vestibule of the vagina.
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