Brain cranial, divisions

The central nervous system (CNS) consists of the brain and spinal cord. The peripheral nervous system (PNS) consists of 12 pairs of cranial nerves that arise from the brainstem and 31 pairs of spinal nerves arising from the spinal cord. These peripheral nerves carry information between the CNS and the tissues of the body. The PNS consists of two divisions ... 

Neurological pathways in the parasympathetic nervous system originate from cranial nerves III, VII, IX, and X from the brain stem and the sacral segments S2, S3, and S4 from the spinal cord. This is why the parasympathetic nervous system is also known as the craniosacral division of the autonomic nervous system. 

---