The peripheral nervous system comprises all neural structures beyond the brain and spinal cord, including sensory, motor and autonomic fibres that connect the central nervous system to receptors and ...
Millions of neurons branch throughout our bodies, keeping them in close communication with our brains. This peripheral network begins to take shape long before birth, as the cells of a growing embryo ...
With terrifyingly sharp teeth arranged around a circular mouth, lampreys look about as primitive a vertebrate as you could imagine. But a new study finds that the animals have a surprising similarity ...