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FLAT PEG Mnemonic for Anterior Pituitary Hormones

FLAT PEG Mnemonic/Acronym

It can be a little difficult to learn about the Anterior Pituitary Hormones for your biology class or the MCAT.

FLAT PEG Mnemonic for Anterior Pituitary Hormones is one of the most popular and useful mnemonics to remember the hormones released in the Anterior Pituitary.

What does FLAT PEG stand for?

  • FSH – Follicle Stimulating Hormone

  • LH – Leutinizing Hormone

  • ACTH – Adrenocorticotropic Hormone

  • TSH – Thyroid Stimulating Hormone

  • Prolactin

  • Endorphins

  • Growth Hormones


This mnemonic is also useful since it will help you remember which hormones belong to which class. There are two important classes of hormones.

1) Tropic – hormones that act on other endocrine glands.

2) Direct – hormones that act directly on some other, non-endocrine, part of the body.

The FLAT hormones are all tropic hormones (you can remember this by picturing a flat, tropical beach) and the PEG hormones are direct (you can remember this because you can picture a peg going directly into a piece of wood).


flat peg anterior pituitary hormones
Anterior Pituitary Hormones
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Short summary of the Anterior Pituitary Hormone System

The anterior pituitary is an endocrine gland that releases a variety of hormones in response to stimuli from the hypothalamus and other sources.

The hypothalamus is the bridge between the Endocrine and Nervous systems. The hypothalamus controls the anterior pituitary gland through the release of tropic hormones into the hypophyseal portal system, which directly connects the hypothalamus to the anterior pituitary. When a hormone from the hypothalamus arrives at the anterior pituitary, it will regulate the gland by either stimulating or blocking the release of an anterior pituitary hormone. Once a hormone is released from the anterior pituitary, it will go on to act on other endocrine tissues (in the case of tropic/FLAT hormones) or to act directly on some other part of the body (in the case of direct/PEG hormones).


Click Here to learn about all of the useful Mnemoncis related to the Endocrine System



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