Histology Flashcards
Endocrine cells are ___ and highly __
ductless; vascularized
Endocrine endothelium is ___ to allow for easy diffusino
fenestrated
Epithelial endocrine organs are ___ derived except for the adrenal cortex which is
endothelial; mesodermal
Leydig cells and ovarian cells and ovarian stromal cells, granulosa and luteal cells have a __ pattern
mesenchymal
The posterior pituitary and the adrenal medulla have a ___ pattern
neural
Thyroid, parathyroid, Anterior pituitary Adrenal cortex, Pancreatic islets all have a _ pattern
epithelial
Renal and GI endocrine cells have an ___ pattern
individual
Anterior pituitary arises from the __ of the ___
ectoderm of the oropharynx (oral ectoderm)
Posterior pituitary comes from the ___ of the __
neuroectoderm of the third ventricle
Anterior pituitary aka
master gland
Anterior pituitary regulated by factors release from
hypothalamic neurons
Posterior pituitary release
oxytocin, ADH
Pars distalis makes up the ___ of AP, ___ __ lies in between, and ___ ___ forms the sheath around infundibulum and contains veins from
bulk; pars intermedia; pars tuberalis; hypothalamus
Pituitary adenoma compresses
CNIII
In the posterior pituitary, the __ __ contains nerve endings and the __ forms the hypothalmohypohysial
tracts
pars nervosa; infundibulum
Pars distalis cell types- acidophils appear ___ and produce _ and _. Basophils in a smaller portion creare
pink; GH; PRL; ACTH, LH/FSH; TSH
Chromophobes in the pars distalis lack ___
vacuoles
The Neurohypophysis contains (3) and these nerves are __, this secretes
median eminence, infundibular stalk, pars nervosa; unmyelinated; ADH
Support cells of the Neurohypophysis are called
pituicytes
The thyroid develops from the
endodermal lining of pharyngeal floor
The thyroid stores thyroglobulin where?
extracellularly in colloids
Follicular cells surround a __ and store _ for creating/secreting _
colloid; thyroglobulin; T3/T4
Parafollicular cells produce and release
calcitonin
Lower parathyroid glands are derived from the __ arch and the upper parathyroid glands are derived from the __ arch
3rd; 4th