PSYCH 3240 Chapter Notes - Chapter 3: Parietal Lobe, Lateral Sulcus, Brainstem

• School: Clemson University
• Department: Psychology
• Course: PSYCH 3240
• Professor: June Pilcher

Document Summary

The vertebrate nervous system is composed of two divisions: the central nervous system and the peripheral nervous system. Roughly speaking, the central nervous system (cns) is the division of the nervous system located within the skull and spine; the peripheral nervous system (pns) is the division located outside the skull and spine. The central nervous system is composed of two divisions: the brain and the spinal cord. The peripheral nervous system is also composed of two divisions: the somatic nervous system and the autonomic nervous system. The somatic nervous system (sns) is the part of the pns that interacts with the external environment. It is composed of afferent nerves that carry sensory signals to the central nervous system and efferent nerves that carry motor signals from the central nervous system to the skeletal muscles. The autonomic nervous system (ans) is the part of the peripheral nervous system that regulates the body"s internal environment.