AAMC FL Practice Exam

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Study for the AAMC FL Exam. Prepare with comprehensive flashcards and multiple-choice questions, each equipped with hints and explanations. Gear up for your medical school entrance exam!

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Practice this question and more.

From which gland is vasopressin (ADH) released?

Anterior pituitary gland
Posterior pituitary gland
Adrenal gland
Thyroid gland

The correct answer is: Posterior pituitary gland

Vasopressin, also known as antidiuretic hormone (ADH), is released from the posterior pituitary gland. This gland plays a crucial role in the endocrine system by storing and releasing hormones produced in the hypothalamus. Specifically, vasopressin is synthesized in the hypothalamus and transported down the axons to the posterior pituitary, where it is released into the bloodstream. The posterior pituitary serves as a storage and release site for this hormone, which is key in regulating water balance in the body by promoting water reabsorption in the kidneys. This physiological role is essential for maintaining hydration and electrolyte balance, particularly in response to dehydration or increased plasma osmolality. Understanding the distinct functions of the different glands in the endocrine system emphasizes why the posterior pituitary gland is the factor for ADH release.