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The anterior pituitary is derived from the ectoderm, more specifically from that of Rathke's pouch, part of the developing hard palate in the embryo. Rathke's pouch is also ectodermal in origin. The pouch eventually loses its connection with the pharynx, giving rise to the anterior pituitary. The anterior wall of Rathke's pouch proliferates ...
The pouch eventually loses its connection with the pharynx giving rise to the anterior pituitary. The anterior wall of Rathke's pouch proliferates, filling most of the pouch to form pars distalis and pars tuberalis. The posterior wall forms pars intermedia. In some organisms, the proliferating anterior wall does not fully occupy Rathke's pouch ...
It develops from a depression in the dorsal wall of the pharynx (stomal part) known as Rathke's pouch. The anterior pituitary contains several different types of cells [9] that synthesize and secrete hormones. Usually there is one type of cell for each major hormone formed in anterior pituitary. With special stains attached to high-affinity ...
The pituitary gland is formed within the rostral neural plate. The Rathke's pouch, a cavity of ectodermal cells of the oropharynx, forms between the fourth and fifth week of gestation [26] and upon full development, it gives rise to the anterior pituitary gland. [27] By seven weeks of gestation, the anterior pituitary vascular system begins to ...
A Rathke's cleft cyst is a benign growth on the pituitary gland in the brain, specifically a mucin-filled [1] cyst in the posterior portion of the anterior pituitary gland. [2] [3] It occurs when the Rathke's pouch does not develop properly and ranges in size from 2 to 40 mm in diameter.
Craniopharyngioma is a rare, usually suprasellar [15] neoplasm, which may be cystic, that develops from nests of epithelium derived from Rathke's pouch. [16] [17] Rathke's pouch is an embryonic precursor of the anterior pituitary. [citation needed] Craniopharyngiomas are typically very slow-growing tumors.
The pars intermedia is one of the three parts of the anterior pituitary. It is a section of tissue sometimes called a middle or intermediate lobe, between the pars distalis, and the posterior pituitary. [1] It is a small region that is largely without blood supply. [2] The cells in the pars intermedia are large and pale.
The neural tube of the ectoderm develops into: brain, spinal cord, posterior pituitary, motor neurons, retina. Note: The anterior pituitary develops from the ectodermal tissue of Rathke's pouch . Neural crest
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