Which of the following is called the "master gland"?
A. Pancreas
B. Adrenal
C. Thyroid
D. Pituitary
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The "master gland" is the pituitary gland, which is option D.
To arrive at this answer, we need to have knowledge of the endocrine system and the functions of various glands. The pituitary gland, located at the base of the brain, is often referred to as the master gland because it regulates the functions of many other glands in the endocrine system. It produces and secretes various hormones that control growth, metabolism, reproductive functions, and other processes in the body.
The pancreas, adrenal glands, and thyroid are also important glands in the endocrine system, but none of them are specifically referred to as the "master gland." The pancreas produces insulin and glucagon to regulate blood sugar levels, the adrenal glands secrete hormones involved in stress response, and the thyroid gland produces hormones that regulate metabolism. However, these glands do not have the same level of control over the entire endocrine system as the pituitary gland does.