Which one of the following statements about aging is most accurate?
A) the brain reaches its maximum weight around the seventh decade of life
B) synaptic connections are too fixed to permit a great deal of learning after the age of 35
C) despite some neuronal loss, an unlimited number of neural pathways are available and ready to be developed; therefore, additional learning can occur throughout life
D) learning throughout the adult and aging years is supported primarily by glial proliferation
E) increased efficiency of the sympathetic nervous system enhances the ability to learn

Question

Quizplus · Accepted Answer

While there is some neuronal loss with aging, research has shown that the brain can continue to make new neural connections and pathways throughout life, allowing for continued learning and development. Additionally, synaptic connections are not fixed and can be strengthened or weakened depending on the frequency and intensity of neural activity. There is also evidence supporting the role of glial cells in learning and memory processes, but they are not the primary mechanism for learning as stated in option D. Option A is incorrect as the brain may continue to change and adapt even after the seventh decade of life. Option B is incorrect as there is no set age at which synaptic connections become too fixed for learning. Option E is incorrect as the sympathetic nervous system is not directly involved in the process of learning.

Which One of the Following Statements About Aging Is Most