bsc1086-17

long-distance chemical signals that travel in the blood or lymph

target cells form more receptors in response to the hormone

target cells lose receptors in response to the hormone

Changing blood levels of ions and nutrients directly stimulates secretion of hormones

nerve fibers stimulate hormone release

hormones stimulate other endocrine organs to release their hormones

-No direct neural connection with the hypothalamus

-There is a vascular connection via the Hypophyseal portal system

-contains axons of hypothalamic neurons

-releases ADH and Oxytocin