ductless gland

1. Ductless gland Most of the post-septal part of the nephridial tube is secretory.
   【解】无管腺，内分泌腺肾管的后隔膜大部分具有分泌作用。
2. Pancreas: Compound gland functioning as Both an exocrine ( secreting through a duct) and an endocrine ( ductless) gland.
   胰脏：混合的腺体，同时具有外分泌腺（经由导管分泌）与内分泌腺（无导管）的功能。

noun

1. any of the glands of the endocrine system that secrete hormones directly into the bloodstream

   Synonym:    endocrine glandendocrine