The Amazing Human Brain

An organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals is the ______

The ______ is located in the head, usually close to the sensory organs for senses such as vision

The cerebral cortex contains approximately 14–16 billion ______ in a human

Each ______ is connected by synapses to several thousand other neurons

Brains exert centralized control over a body's other organs and act on the rest of the body by generating patterns of muscle activity and by driving the secretion of chemicals called ______