The document discusses body coordination in humans, which is divided into nervous coordination and hormonal coordination. Nervous coordination is controlled by the nervous system and nerves, while hormonal coordination is controlled by the endocrine system and endocrine glands. The human nervous system consists of the central nervous system comprising the brain and spinal cord, and the peripheral nervous system including cranial nerves and spinal nerves. The peripheral nervous system is further divided into the somatic and autonomic nervous systems, with the somatic system controlling voluntary actions and the autonomic system controlling involuntary actions.