Arkansas Esthetician Practice Exam

What controls all three subsystems of the nervous system?

1. Spinal cord

2. Medulla oblongata

3. Brain

4. Cerebrum

The correct answer is: Brain

All three subsystems of the nervous system are controlled by the brain, including the central nervous system, peripheral nervous system, and enteric nervous system. While the spinal cord and medulla oblongata play important roles in transmitting and coordinating nerve signals, they are not responsible for controlling all three subsystems. The cerebrum is also a part of the brain, but it specifically focuses on higher level functions such as memory, language, and decision-making, rather than controlling all three subsystems. Therefore, the brain is the correct and most comprehensive answer.