The hypothysis, an appendage of the brain on its basal aspect, is also called the pituitary gland, since Andreas Vesalius (1543) in his “Fabrica” interpreted this organ as the production site of pituita (phlegm). The pituitary gland, which weighs about 0.5 g in man, is divided into two main components: the neurohypophysis, which embryologically is derived from the floor of the diencephalon, and the adenohypophysis, which originates from Rathke’s pouch, the invagination of the roof of the buccopharyngeal cavity. In this chapter, we will concentrate on the adenohypophyseal cells as the paraneuronal component of the pituitary gland; the neurohypophysis was dealt with in relation to the classic neuro-secretory system (p. 55).
KeywordsSecretory Granule Endocrine Cell ACTH Cell Adenohypophyseal Cell Prolactin Cell
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