9.2 POJA-L2761+2763+2945+2771+2773
Title: Adenohypophysis (pars distalis I) of the pituitary gland
Description:
(A): Hypophysis, stain Mallory, human. This stain illustrates the orange-yellow-stained acidophilic cells, the bluish-stained basophilic cells
and the pale chromophobe cells.
(B): Stain Azan, mainly acidophilic cells or α-cells (red) and some bluish basophilic cells and chromophobe cells, human.
(C, D): Pars distalis, corresponding colour and electron microscopy schemes, human.The cords and clusters in the adenohypophysis
contain cells that produce various types of hormones.
(1) Mammotropic (lactotropic) cell.
(2) Somatotropic cells.
(3, 4) Gonadotropic cells.
(5) Thyrotropic cell.
(6) Folliculo-stellate cells (chromophobes with junctional complexes lining the follicular lumen).
(E): Electron micrograph adenohypophysis, rat. Predominantly somatotrophs with numerous secondary granules.
The hormones are stored in electron-dense and electron-grey granules.
Background: The acidophilic cells contain polypeptide hormones, basophilic cells contain glycoprotein hormones and chromophobes have hardly hormone content.
The lateral wings of the adenohypophysis mainly contain acidophilic cells that secrete growth hormone (GH).
The lactotrophs are scattered uniformly throughout the adenohypophysis and produce prolactin (PRL).
The median portion of the gland includes basophilic cells containing corticotrophs (ACTH), thyrotrophs (TSH) and gonadotrophs
(FSH and LH). (Note: In human one cell type with varying morphology).
Note that thyrotrophs cells have been shown to produce several hormones and are probably multi-responsive corresponding to
the hypothalamus releasing hormones. This holds probably also for other hormone producing cell types.
Keywords/Mesh: hypophysis, pituitary gland, adenohypophysis, pars distalis, acidophilic cell, basophilic cell, chromophobe cell, histology, POJA collection
Title: Adenohypophysis (pars distalis I) of the pituitary gland
Description:
(A): Hypophysis, stain Mallory, human. This stain illustrates the orange-yellow-stained acidophilic cells, the bluish-stained basophilic cells
and the pale chromophobe cells.
(B): Stain Azan, mainly acidophilic cells or α-cells (red) and some bluish basophilic cells and chromophobe cells, human.
(C, D): Pars distalis, corresponding colour and electron microscopy schemes, human.The cords and clusters in the adenohypophysis
contain cells that produce various types of hormones.
(1) Mammotropic (lactotropic) cell.
(2) Somatotropic cells.
(3, 4) Gonadotropic cells.
(5) Thyrotropic cell.
(6) Folliculo-stellate cells (chromophobes with junctional complexes lining the follicular lumen).
(E): Electron micrograph adenohypophysis, rat. Predominantly somatotrophs with numerous secondary granules.
The hormones are stored in electron-dense and electron-grey granules.
Background: The acidophilic cells contain polypeptide hormones, basophilic cells contain glycoprotein hormones and chromophobes have hardly hormone content.
The lateral wings of the adenohypophysis mainly contain acidophilic cells that secrete growth hormone (GH).
The lactotrophs are scattered uniformly throughout the adenohypophysis and produce prolactin (PRL).
The median portion of the gland includes basophilic cells containing corticotrophs (ACTH), thyrotrophs (TSH) and gonadotrophs
(FSH and LH). (Note: In human one cell type with varying morphology).
Note that thyrotrophs cells have been shown to produce several hormones and are probably multi-responsive corresponding to
the hypothalamus releasing hormones. This holds probably also for other hormone producing cell types.
Keywords/Mesh: hypophysis, pituitary gland, adenohypophysis, pars distalis, acidophilic cell, basophilic cell, chromophobe cell, histology, POJA collection