Best Answer. The total length of your circulatory system stretches an amazing 60,000 miles. That is more than twice the distance around the Earth. The central nervous system is connected to every part of the body by 43 pairs of nerves. Twelve pairs go to and from the brain, with 31 pairs going from the spinal cord. read more
The total length of your circulatory system stretches an amazing 60,000 miles. That is more than twice the distance around the Earth. The central nervous system is connected to every part of the body by 43 pairs of nerves. Twelve pairs go to and from the brain, with 31 pairs going from the spinal cord. read more
In the nervous system, information is carried in the form of electrical and chemical signals by highly complex cells called neurons. The human body contains some 100 billion neurons, which form a part of the nervous tissue (the brain, the spinal cord and the nerves). read more