Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2
Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2
https: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2 connective tissue capsule (2. Distinguished by their modes of development and detail structure, there are the large glandular lobe, the adenohypophysis a, and the smaller cerebral lobe, the neurohypophysis E. The adenohypophysis (anterior lobe, pars distalis) continues toward the cranium as tubular Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2 part of the hypophysis cerebri (pars infundibu-laris) 0. The infundibulum 13 connects the neurohypophysis (posterior lobe, pars nervosa) to the diencEbook Color atlas of cytology, histology and microscopic anatomy: Part 2
ephalon. The intermediary lobeẳì between anterior and posterior lobes is part of the adenohypophysis. This sagittal section distinctly shows these difhttps: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2with eminentia mediana6Intermediary lobe with colloid cysts (adenohypophysis) stain: azan: magnification: X 7345Adenohypophysis—Anterior LobeThe anterior lobe of the adenohypophysis (pars distalis) consists of cords and nests of different types of epithelial cells. These are surrounded by reticular Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2fibers and wide blood sinuses. The cells are grouped according to their affinities to dyes as acidophilic ĨT, basophilic ĨĨ or chromophobic E cells. TEbook Color atlas of cytology, histology and microscopic anatomy: Part 2
he three cell types can be distinguished in this figure without much effort. Acidophilic cells DO are round and contain a dense (acidophilic) populatihttps: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2m, those in mammotropic acidophilic cells have diameters of 600-900 nm. Basophilic cells (U come in various sizes. They contain granules. There are gonadotropic basophilic cells (granule size: 300-400nm), thyrotropic basophilic cells (granule size: 60-160 mil), adrenotropic basophilic cells (granule Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2 size: 200-500 mil), lipotropic basophilic cells (granule size: 200-500 mil) and me-lanotropic basophilic cells (granule size: 200-400 nm). AccordingEbook Color atlas of cytology, histology and microscopic anatomy: Part 2
to current opinion, the chromophobic cells [31 do not participate in the biosynthesis of hormones. They are very likely precursors of hormone-producinhttps: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2nterior LobeSection of the anterior lobe (pars distalis) from the adenohypophysis. Compare this micrograph with Fig. 345. The legend includes both commonly used terminologies.1cx-cells (acidophilic)4 y-cells (chromophobic)2|3-cells (basophilic)5 e-cells3ồ-cellsStain: azan: maonification: X 400Endocr Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2ine Glands347Adenohypophysis—Intermediary LobeBecause of its developmental origin, the intermediary lobe (pars intermedia) between anterior and posterEbook Color atlas of cytology, histology and microscopic anatomy: Part 2
ior lobes □ of the hypophysis belongs to the adenohypophysis (cf. Fig. 344). The intermediary lobe constitutes about 3% of the adenohypophysis. The dehttps: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2 the dorsal hypophysis (basophil invasion). Colloid-filled cysts (colloid cysts) 0 are conspicuous elements in the intermediary lobe. They derive from the hypophyseal pouch (remnant of the Rathke pouch). The cysts may be lined by a single-layered epithelium or sometimes by a multilayered stratified Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2epithelium at different levels of differentiation. The cells of the intermediary lobe synthesize melanotropin (melanocyte stimulating hormone, MSH).1PEbook Color atlas of cytology, histology and microscopic anatomy: Part 2
osterior lobe (pars nervosa)3 Cells of the adenohypophysis2Colloid cystsSlain: azan; magnification: X 80Endocrine Glands348NeurohypophysisThe neurohyphttps: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2e neurohypophysis are neuroglia cells (pituicytes, protoplasmic glial cells), numerous unmyelinated nerve fibers, which stem from neurosecretory neurons of the hypothalamus, connective tissue and vessels. Routine staining procedures reveal a dense matted layer of fibers (a) or a woven meshwork of fi Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2ne, unmyelinated nerve fascicles m (cross-sectioned or cut longitudinally). The meshwork of the nerve fascicles contains pituicytes and wide capillariEbook Color atlas of cytology, histology and microscopic anatomy: Part 2
es. Figure (b) shows numerous basophilic cells I2l, which have invaded from the intermediary lobe (basophil invasion) into the posterior lobe. Two maihttps: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2nvaded from the intermediary lobe3VeinStain: alum hematoxylin-eosin; magnifications; a) X 40; b) X 100349Pineal Gland—Epiphysis CerebriThe pineal gland has a conical shape. Its surface is covered by the pia mater. Connective tissue septarn originate at the pia mater and subdivide the paren-chyme int Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2o incompletely separated lobes of different sizes. The pineal gland consists of pinealocytes (modified photoreceptor cells), interstitial cells and glEbook Color atlas of cytology, histology and microscopic anatomy: Part 2
ial cells (astrocytes). The interstitial cells often form structures in the same way that epithelial cells do. Degeneration of the pineal gland proceehttps: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thin Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2form of stacked lamellae (stained red or blue), which consist of pebbles of organic substances as well as calcium and magnesium salts.1 Connective tissue septa Ebook Color atlas of cytology, histology and microscopic anatomy: Part 2https: /Zk hot h u vien .com344Hypophysis—Pituitary GlandThe human hypophysis (hypophysis cerebri) weighs about 600-900 mg. It is enveloped by a thinGọi ngay
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