Nervous System. All mental and physical activities are controlled or mediated by the brain and the nervous system. Voluntary actions originate in the brain and the nerves carry the information to other parts of our body.The nervous system relies upon a correct chemical balance in the body.ervous System. All mental and physical activities are controlled or mediated by the brain and the nervous system. Voluntary actions originate in the brain and the nerves carry the information to other parts of our body.
From Wikipedia, the free encyclopedia. Letts is a city in Louisa County, Iowa, United States established in 1855. The population was 384 at the 2010 census. It is part of the Muscatine Micropolitan Statistical Area. The name is from local benefactor, Maddison Letts.
U.S. Decennial Census. Driggs is a city in Teton County, Idaho, United States. It is part of the Jackson, WY-ID Micropolitan Statistical Area, and is located in Teton Valley, the headwaters of the Teton River. The population was 1,660 at the 2010 census, up from 1,100 in 2000. The city is the county seat of Teton County, and was its largest city until recently surpassed by Victor.