Hypophysis Flashcards
Adenohypophysis
The frontal, glandular portion of the hypophysis (anterior pituitary) that produces trophormones.
Gonadotropins
Hormones that regulate reproductive function and production of sexual hormones (e.g. FSH, LH-ICSH, prolactin).
Hypophysiotropic area
Parvocellular region of the hypothalamus that regulates the function of the adenohypophysis; releasing and inhibiting factors (hormones) are produced here.
Inhibiting hormones and factors
Hormones produced by the parvocellular (small cell) region of the hypothalamus that regulate adenohypophysis functions.
Releasing hormones and factors
Hormones or hormone-like compounds produced by the parvocellular region of the hypothalamus (hypophysiotropic area) that facilitate adenohypophysis (anterior pituitary) hormone production and release.
Neurohemal-organ
Organs of neuronal origin in that store hormones (usually secreted by other neurons) e.g. neurohypophysis.
Neurohypophysis
Posterior lobe of the pituitary gland (hypophysis) that stores hormones secreted by hypothalamic neurons (a neurohemal organ).
Trop hormones
Pituitary (adenohypophysis) hormones that stimulate production and release of other hormones from other glands (e.g. TSH, ACTH, FSH).
Portal circulation
Capillaries in one organ are collected into veins, enter the other organ through a port and form a second capillary bed to release substances carried from the first organ (e.g. hypothalamus- hypophysis).