Control of pituitary secretion
Pituitary stimulates another Endocrine gland to secrete it's hormone and that hormone feedback to Pituitary and inhibit further secretion of trophic hormone.
For example, TRH (thyrotropin releasing hormone) from hypothalamus stimulates release of TSH (thyroid stimulating hormone) from anterior pituitary.
TSH stimulate the release of thyroid hormone from thyroid gland.
Thyroid hormone cause negative feedback, inhibit release of TRH and TSH.
Hypothalamus
Releasing hormones
Anterior lobe of pituitary gland
Tropic hormone to target (endocrine gland)
Target gland
Raised blood level of target gland hormones
Use of hormone
Lowered blood level of target gland hormones
(Negative feedback regulation of secretion of hormones by anterior lobe of pituitary gland).
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