Click on the orange words in the correct order to fill in the blanks.
In animals, the brain (enkephale) (Greek for "in the skull"), is the control center of the central nervous system, responsible for behavior. The brain is located in the head, protected by the skull and close to the primary sensory of vision, hearing, (balance), sense of taste, and (smell). While all have a brain, most have either a brain or of ganglia. Some animals such as and do not have a centralized brain, instead having a nervous system, while animals such as sponges lack both a brain and nervous system entirely. Brains can be complex. For example, the human brain contains more than 100 billion neurons, each linked to as many as 10,000 other neurons.
Read more in the Wikipedia entry for Brain
Get more cloze exercises like this one at clozure.trainingo2.net