The central nervous system (cns) contains a number of components that perform specific functions within the body. some functions, such as breathing, swallowing, and blood circulation, are involuntary, or done without conscious control. which part of the cns is responsible for these functions?
cerebrum
hippocampus
cerebellum
brain stem

Based on the body structures of these animals, which two conclusions are scientifically the skeletal structure of the gorilla and chimpanzee suggest a common evolutionary ancestry. the dog and frog share a closer evolutionary ancestry than the gorilla and chimpanzee. the dog is more closely related to the frog than it is to the chimpanzee. all four organisms share a common vertebrate ancestor.