Praxis 5857 Practice Question
The fact that a 75-year-old person generally responds to outside stimuli more slowly than a 45-year-old person is due to the effects of aging on which of the following systems?
Correct Answer: A
Rationale: Aging significantly impacts the nervous system, leading to slower responses to stimuli. This decline is associated with reduced neuronal processing speed and changes in neurotransmitter levels. In contrast, the endocrine system (B) primarily regulates hormones and metabolism, which do not directly affect response times. The skeletal system (C) involves bone density and strength, not response speed. Lastly, while the respiratory system (D) affects breathing efficiency, it does not primarily influence reaction time. Thus, the nervous system is the key factor in the observed age-related differences in response speed.
Unlock All Questions
Subscribe to Premium for full access to all practice questions, detailed rationales, and performance tracking.
Subscribe Now