"Pituitary function" refers to the role or job carried out by the pituitary gland. The pituitary gland is a small organ located in the brain that produces and releases hormones. These hormones regulate various functions in the body, such as growth, reproduction, metabolism, and controlling other glands. So,
"pituitary function" essentially refers to the proper working and regulation of this gland to ensure the body functions smoothly.
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