Nervous System. The nervous system is the control center of the human body. It is made up of the brain, spinal cord, and nerves. It receives and interprets stimuli and transmits impulses to organs.Your brain uses the information it receives to coordinate all of your actions and reactions.ervous System. The nervous system is the control center of the human body. It is made up of the brain, spinal cord, and nerves. It receives and interprets stimuli and transmits impulses to organs.
Finding Lucy. Don Johanson describes finding the knee joint in Hadar, Ethiopia, that first indicated a bipedal hominid had lived 3 million years ago. His subsequent expedition led to the discovery of Lucy, a 40 percent complete skeleton of a new species of hominid, now known as Australopithecus afarensis. The final piece of the puzzle was a skull from the same site, which clearly demonstrated that Lucy's kind were small-brained, although they walked upright.
Lucy is the nearly complete skeleton of an Australopithecus afarensis, found in 1974 at AL 288, a site in the Afar Triangle of Ethiopia. Lucy (AL 288) :Australopithecus afarensis Skeleton from Ethiopia