Akademik

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

↑thyroid gland, ↑thyroid, ↑parathyroid gland, ↑parathyroid, ↑adrenal gland, ↑adrenal, ↑suprarenal gland, ↑prostate gland, ↑prostate, ↑thymus gland, ↑thymus, ↑pituitary, ↑pituitary gland, ↑pituitary body, ↑hypophysis, ↑anterior pituitary, ↑anterior pituitary gland, ↑adenohypophysis, ↑pars distilis, ↑pars anterior, ↑pars intermedia, ↑posterior pituitary, ↑posterior pituitary gland, ↑neurohypophysis, ↑pars nervosa, ↑pineal gland, ↑pineal body, ↑epiphysis cerebri, ↑epiphysis, ↑islands of Langerhans, ↑isles of Langerhans, ↑islets of Langerhans, ↑adrenal cortex, ↑adrenal medulla, ↑corpus luteum, ↑gonad, ↑sex gland

ductless gland,

a gland without a duct whose secretion passes directly into the blood or lymph circulating through it; endocrine gland. The thyroid, the pituitary, and the thymus are ductless glands.