![]() ![]() It arises from the posterior wall of Rathke pouch and contains vestigial lumina of Rathke pouch which appear as narrow vesicles of variable length. The pars intermedia in a thin layer of epithelial cells located between pars distalis and neurohypophysis. The pars tuberalis is the part of the adenohypophysis which surrounds the anterior aspect of the infundibular stalk. It is composed of cords of epithelial cells individually specialized to secrete tropic hormones acting on target organs: It forms from the anterior wall of Rathke pouch. ![]() The pars distalis is the largest part of the pituitary gland. The anterior pituitary (or adenohypophysis) is by far the largest part of the pituitary gland, and is responsible for synthesis and release of most pituitary hormones (with the exception of oxytocin and antidiuretic hormone (ADH) which are released by the posterior pituitary). ![]()
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January 2023
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