Ductless Gland -

: They pour chemical messengers (hormones) directly into the circulatory system for body-wide transport.

: Located atop kidneys; regulate stress via adrenaline. ductless gland

: Unlike exocrine glands that act locally (like sweat), ductless glands influence distant target organs. : They pour chemical messengers (hormones) directly into

: Often called the "master gland" for controlling others. Thyroid Gland : Found in the neck; manages metabolic rate. manages metabolic rate.