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The human central nervous system consists of the brain and spinal cord. These lie in the midline of the body and are associated with the skull and vertebrae respectively. (see Nervous System)

The central nervous system along with the peripheral nervous system comprise a primary division of controls that command all physical activities of a vertebrate. Neurons of the central nervous system affect consciousness and mental activity while spinal extensions of central nervous system neuron pathways affect skeletal muscles and organs in the body.

The peripheral system is made of two divisions, the somatic nervous system and the autonomic nervous system, which is further divided as the sympathetic nervous system, the parasympathetic nervous system and the enteric nervous system. Each of these interact with various organs, glands or muscles, providing information to and from the central nervous system.

Arguably still the most complex object known to man, this collection of billions of neurons known as the central nervous system is the seat of consciousness and the central controller over just about everything that makes us human.

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1 Related topics

2 Parts of the central nervous system

spinal cord

brainstem (everything from here on is brain)
- medulla oblongataThe medulla oblongata is the lower portion of the brainstem. By anatomical terms of location, it is rostral to the spinal cord and caudal to the pons, which is in turn ventral to the cerebellum. For a human or other bipedal species, this means it is above

metencephalon
- ponsThe pons is a knob on the brain stem. It is part of the autonomic nervous system, and relays sensory information between the cerebellum and cerebrum. Some theories posit that it has a role in dreaming. Anatomy of the pons The "knob-like" shaped on the ant
- cerebellumGeneral Features Location It is found at the bottom rear of the head (the hindbrain), directly above the brainstem. Role The cerebellum is involved in modulating, rather than initiating movements. It is involved in guiding movements based on sensory feedb

diencephalonThe diencephalon is the region of the brain that includes the epithalamus, thalamus, and hypothalamus. It is located above the mesencephalon of the brain stem. Sensory information is relayed between the brain stem and the rest of the brain regions Cerebru
- thalamusFor other uses, see Thalamus Ltd. The thalamus is a part of the brain. It is located in the center of the brain, beneath the cerebral hemispheres and next to the third ventricles. It is formed of grey matter and can be thought of as a relay station for ne
- hypothalamus
- pineal gland
- pituitary gland

telencephalon

Nervous system

Brain - Spinal cord - Central nervous system - Peripheral nervous system - Somatic nervous system - Autonomic nervous system - Sympathetic nervous system - Parasympathetic nervous system

Nervous system *

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