How do diseases like Parkinson's and Alzheimer's affect the process of control and coordination in the human body?

Diseases like Parkinson's and Alzheimer's affect control and coordination by damaging brain cells and neural pathways involved in memory, movement, and cognitive functions. They can lead to symptoms such as tremors, muscle rigidity, memory loss, and impaired coordination, impacting daily activities and quality of life. Therefore, the correct answer is 'Parkinson's and Alzheimer's impair memory and cognitive functions'.