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main organ of the nervous system. protected by the skull, and made of neurons, it is the control center for all actions, thoughts and emotions.
A. brain
B. electrical impulse
C. gland
D. heart
Preview next quiz:
main organ of the nervous system. protected by the skull, and made of neurons, it is the control center for all actions, thoughts and emotions.
A. brain
B. electrical impulse
C. gland
D. heart