Which of the following is an endocrine function that occurs in both males and females?

• A. Secretion of estrogen by the ovaries
• B. Regulation of blood glucose by insulin secretion from the pancreas
• C. Production of testosterone by the testes
• D. Milk production by the mammary glands

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the endocrine system. The endocrine system is responsible for secreting hormones directly into the bloodstream to regulate various physiological processes. Hormones are chemical messengers that affect growth, metabolism, reproduction, and homeostasis.
2. Step 2: Analyze the options provided. The question asks for an endocrine function that occurs in both males and females. Review each option to determine whether it applies to both sexes or is specific to one.
3. Step 3: Evaluate the first option, 'Secretion of estrogen by the ovaries.' Estrogen secretion is specific to females because ovaries are female reproductive organs. This is not a function shared by both sexes.
4. Step 4: Evaluate the second option, 'Regulation of blood glucose by insulin secretion from the pancreas.' Insulin is a hormone secreted by the pancreas that regulates blood glucose levels. This function occurs in both males and females, as both sexes have a pancreas performing this role.
5. Step 5: Evaluate the remaining options. 'Production of testosterone by the testes' is specific to males, as testes are male reproductive organs. 'Milk production by the mammary glands' is primarily a female function related to lactation. Therefore, the correct answer is the regulation of blood glucose by insulin secretion from the pancreas, as it is an endocrine function shared by both sexes.