Final answer:
A cubic centimeter of brain tissue contains millions of neurons, which are responsible for transmitting information throughout the brain and the nervous system.
Step-by-step explanation:
The number of neurons in a cubic centimeter of brain tissue is estimated to be in the millions. Neurons are the fundamental building blocks of the nervous system, and a typical human brain has about 100 billion neurons at birth. These specialized cells are responsible for transmitting information throughout the brain and the central nervous system. The density of neurons can vary throughout different regions of the brain, but on average, there are millions of neurons in just one cubic centimeter of brain tissue. This high density is part of why the brain is so powerful and capable of processing vast amounts of information.