Pituitary Flashcards
Which pituitary lobe is the pars nervosa a part of?
Posterior lobe
What are the components of the anterior pituitary?
Pars tuberalis and pars distalis
What comprises the neurohypophysis?
Median eminence
Infundibular stalk
Infundiblar process (pars nervosa)
The anterior pituitary is of ____ origin whereas the posterior pituitary is of ____ origin
Epithelial
Neural
Rathke’s pouch is the embryological precursor to which structure?
Anterior lobe of the pituitary
The _____ artery and ____ artery supply the pituitary and branch from the _____ artery
Superior hypophyseal
Inferior hypophyseal
Internal carotid
The median eminence has an ____ supply but lacks significant ____ drainage other than the portal system to the _____
Arterial
Venous
Pars distalis
What is the blood supply to the pars nervosa like?
Own arterial supply and drainage
Hormones destined for the ____ pituitary are released directly into the systemic circulation
Posterior
Hormones destined for the _____ pituitary travel via the portal blood vessels
Anterior
Somatotrophs and lactotrophs are acidophils/basophils
Acidophils
What are the basophils of the pars distalis?
- Gonadotrophs
- Thyrotrophs
- Corticotrophs
Acidophils are _____ charged whereas basophils are ____ charged
Negatively
Positively
In pregnancy there is a marked proliferation of acidophils/basophils
Acidophils (prolactin)
Acromegaly would result in an proliferation of acidophils/basophils
Acidophils (GH)
