Which of the following is an endocrine gland?

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Multiple Choice

Which of the following is an endocrine gland?

Explanation:
Endocrine glands release hormones directly into the bloodstream to regulate functions throughout the body. The pituitary gland fits this role as a central endocrine gland located at the base of the brain; it secretes hormones that control growth, metabolism, and the activity of other endocrine glands, earning it the nickname “master gland.” The other organs—heart, liver, and lungs—have vital roles in circulation, metabolism, and gas exchange, but they aren’t classified primarily as endocrine glands. They may release signaling molecules in some contexts, yet their main functions aren’t hormone-secreting glands like the pituitary.

Endocrine glands release hormones directly into the bloodstream to regulate functions throughout the body. The pituitary gland fits this role as a central endocrine gland located at the base of the brain; it secretes hormones that control growth, metabolism, and the activity of other endocrine glands, earning it the nickname “master gland.” The other organs—heart, liver, and lungs—have vital roles in circulation, metabolism, and gas exchange, but they aren’t classified primarily as endocrine glands. They may release signaling molecules in some contexts, yet their main functions aren’t hormone-secreting glands like the pituitary.

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