One who studies the endocrine system?

• A. Endocrine
• B. Endocrinologist
• C. Endoderm
• D. Endometrium

Answer: (B)

The term for a person who studies the hormones and glands of the body is endocrinologist. The -logist ending signals a specialist who studies or treats a particular field, so endocrinologist specifically refers to someone who focuses on the endocrine system. Endocrine describes the system itself, not a person. Endoderm is a primitive embryonic tissue, and endometrium is the lining of the uterus. Those terms don’t refer to a professional who studies hormones, so the endocrinologist is the best fit.