A 74-year-old woman has a fast heart rate and feels weak and dizzy when she tries to stand up. The dizziness this patient feels when standing might be caused by what?
Answer: It happens when the autonomic nervous system (ANS) doesn't work as it should. The autonomic nervous system is the body's "autopilot" system, controlling things like heart rate, blood pressure, and breathing. (I'm not sure tho)
