Pituitary Gland
links: reference: 4-23-2021
Pituitary Gland #
- A pea-sized gland in the Endocrine System located on the bottom of the hypothalamus. Connected to the Hypothalamus by the infundibulum.
- Secretes:
- Anterior: FSH and Luteinizing Hormone - Target: ovaries/testes
- Adrenocortocotropic Hormone, in response to Corticotrophin-releasing hormone.
- TSH, in response to TRH - Target: thyroid gland
- TRH is satiety-promoting in the hypothalamus.
- Prolactin, in response to PRH - Target: mammary glands (As a neuropeptide it’s a bit more complicated than that whih makes me question the other ones kinda)
- Growth Hormone, in response to GHRH - Target: liver, bone, muscles
- Posterior pituitary (part of the hypothalamus apparently)
- It sort of acts in opposition to the thyroid. Note that it produces TSH, as well as TRH which stimulates prolactin/the pituitary tone.
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Pituitary inhibitor of thyroxine
- It is suggested that the new function acts to decrease gradually the responsiveness of the peripheral tissues to thyroid hormones throughout life.
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Pituitary inhibitor of thyroxine
- The hormones of the pituitary are strongly “lipogenic”, in that they release free fatty acids, reducing the response of peripheral tissues to thyroid ormones.
- Darkness increases the pituitary hormones, especially prolactin and TSH.