Endocrine Flashcards
Endocrine system organs
Pituitary (adenohypophysis), Adrenal (suprarenal) gland, thyroid and parathyroid gland, pineal gland, islet of langerhans, Diffuse neuroendocrine system (endocrine cells of intestine, heart, kidney)
Pituitary gland location
Attached to hypothalamus by infundibulum
The glandular portion of the pituitary gland is called the ___.
Adenohypophysis (derived from ectoderm of primitive oral cavity)
The divisions of the adenohypophysis
pars distalis, pars tuberalis, and pars intermedia
The neural portion of the hypothalamus is called the ___.
neurohypophysis (derived from neuroectoderm)
The neurohypophysis consists of the ___.
pars nervosa and infundibulum
The posterior lobe of the pituitary consists of ___.
the pars nervosa and pars intermedia
The anterior lobe of the pituitary consists of the ___.
Pars distalis and pars tuberalis
Very long slide on control of secretion by adenohypophysis
Peptide hormones produced by special neurons in hypothalamic nuclei are released into the primary capillary plexus of the infundibulum and these both stimulate or inhibit the release of hormones by cells in the anterior pituitary. Hormones to stimulate release of thyrotropin, gonadotropin, somatostatin, growth hormone, & corticotropin. Also a hormone to inhibit prolactin release.
Inferior hypophyseal arteries primarily supply ____.
Pars nervosa
____ supply median eminence, upper part of infundibulum, & lower part of the infundibulum via connection to inferior hypophyseal arteries
Superior hypophyseal arteries supply median eminence, upper part of infundibulum, & lower part of the infundibulum via connection to inferior hypophyseal arteries
Arteries supplying median eminence & infundibulum end in ___.
capillary plexuses
____ drain the areas supplied by the plexuses
Hypophyseal portal veins
