That is by convention you put it into central nervous system. Tomorrow you can put the brain only in central nervous system and the spinal cord in the peripheral nervous system. This is anatomical classification. Physiologically the nervous system is single unit.
The spinal cord is not at the periphery; it runs down the center of the body.
The central nervous system is made up of the brain and spinal cord.
The central nervous system is composed of the brain and the spinal cord. Everything else is classed as the Peripheral nervous system.
The central nervous system of vertebrates (such as humans) contains the brain, spinal cord, and retina. credit to en.wikipedia.org/wikiNervous_system
The spinal cord is part of the central nervous system which itself it part of the nervous system.
The brain generates efferent signals for the body. Efferent signals travel down the spinal cord, and out to target areas of the body. Afferent feedback signals travel back to the spinal cord, and back up to the brain for processing.
The central nervous system
The central nervous system is composed of the brain and spinal cord.
Central nervous system-- The brain and spinal cord.
The central nervous system has two organs, the brain and the spinal cord.
The central nervous system is made up of the brain and spinal cord.
the central nervous system is made up of the brain and the spinal cord
The brain and spinal cord make up the central nervous system, answer A.
Unlike the Peripheral nervous system, the Central Nervous System includes the brain and the spinal chord.
The central nervous system (CNS) and the peripheral nervous system (PNS)
The spinal cord is connected to the brain and is part of the central nervous system.
The central nervous system consists of the brain and the spinal cord
The central nervous system (composed of the brain and spinal cord) and the peripheral nervous system (composed of the rest).