Hypothalamus & Pituitary Flashcards
what connects the hypothalamus and pituitary?
infundibulum
where is the pituitary gland and how is it divided?
sphenoid bone
anterior/posterior pituitary
what is a tropic hormone?
It governs the release of another hormone
what are all hormones that are released by the hypothalamus?
neurohormones
what hormones are released from the posterior pituitary?
neurohormones
what hormones are released from the anterior pituitary?
endocrine hormones
two forms of hypothalamic neurohormones?
Tropic
Non-tropic
what are tropic hypothalamic neurohormones?
neurohormones secreted into capillaries travelling to anterior pituitary and govern the release of anterior pituitary hormones
what are non-tropic hypothalamic neurohormones?
neurohormones that are produced in the hypothalamus and travel to posterior pituitary where they are released into the blood
where do all hypothalamic hormones bind?
bind to receptors on anterior pituitary and stimulate/inhibit release of AP hormones
hypothalamic releasing hormones? (5)
Thyrotropin releasing Hormone
Corticotropin releasing hormone
Prolactin releasing hormone
GHRH
GnRH
hypothalamic inhibiting hormones? (2)
GHIH (somatostatin)
Prolactin inhibiting hormone (dopamine)
A+ P pituitary tissue?
A - endocrine tissue
P - neuroendocrine
A+ P pituitary origin?
A - epithelial origin
P - neural tissue origin
how is anterior pituitary connected to hypothalamus?
hypothalamic-hypophyseal portal
