Which gland is part of the endocrine system?

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Multiple Choice

Which gland is part of the endocrine system?

Explanation:
Endocrine glands release hormones into the bloodstream to regulate body functions, and the pituitary gland is a central example of this role. Located at the base of the brain, it secretes hormones that control growth, metabolism, and reproduction, and it directs other glands (like the thyroid and adrenal glands) by sending tropic signals. This coordinating, master-like function makes it the best fit among the options. The pancreas does have endocrine activity (producing insulin and glucagon) but also plays a major digestive exocrine role, so it isn’t as clear-cut an endocrine gland in this context. Hair isn’t a gland, and the spleen isn’t involved in hormone secretion.

Endocrine glands release hormones into the bloodstream to regulate body functions, and the pituitary gland is a central example of this role. Located at the base of the brain, it secretes hormones that control growth, metabolism, and reproduction, and it directs other glands (like the thyroid and adrenal glands) by sending tropic signals. This coordinating, master-like function makes it the best fit among the options. The pancreas does have endocrine activity (producing insulin and glucagon) but also plays a major digestive exocrine role, so it isn’t as clear-cut an endocrine gland in this context. Hair isn’t a gland, and the spleen isn’t involved in hormone secretion.

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