Final answer:
Functional changes in the endocrine system with aging include decreased thyroxin response and decreased DHEA production. Option C) Decreased Thyroxin Response is the correct answer. Aging can significantly impact hormone production and health.
Step-by-step explanation:
The question pertains to functional changes in the endocrine system as it ages, focusing on the decreased production and response to thyroxin and decreased production of dehydroepiandrosterone (DHEA). As the body ages, the endocrine system can undergo various changes which may lead to a decrease in hormone production and secretion, such as thyroid hormones and steroid hormones like DHEA.
The correct answer to the question would be option C) Decreased Thyroxin Response since the statement specifically mentions a functional change involving a decreased response to thyroxin. Decreased thyroxin response and decreased DHEA production are reflections of how aging can affect hormonal pathways and endocrine function, which could also lead to various health complications.
The aging process can alter the production of hormones such as human growth hormone, cortisol, aldosterone, sex hormones, thyroid hormones, and result in conditions like menopause, osteoporosis, and changes in metabolism. These intricately linked systems show that even a singular change in hormone levels or response can lead to significant alterations in overall health and bodily functions.