Question

what do you mean by ductless gland
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Answer 1

any of the glands of the endocrine system that secrete hormones directly into the bloodstream. endocrine gland, endocrine. gl

Answer 2

Ductless glands are glands that secrete their product directly onto a surface rather than through a duct. ... The pineal gland, the thymus gland, the pituitary gland, the thyroid gland, the spleen, and the two adrenal glands are all ductless glands.