PS267 Lecture Notes - Lecture 3: Peripheral Nervous System, Autonomic Nervous System, Sympathetic Nervous System
Document Summary
Chapter 2: structure and function of the nervous system: cells of the nervous system, neural communication, the nervous system, the spinal cord, the brain, the cerebral cortex, development of the nervous system. The nervous system: two main divisions of the nervous system: Central nervous system (cns: brain and spinal cord. Peripheral nervous system (pns: located outside the skull and spine, brings information to and from the cns, two divisions of the peripheral nervous system: Somatic nervous system: picks up sensory information and carries out voluntary motor commands, senses to brain. Autonomic nervous system: controls visceral functions and involuntary actions. Ie. heartbeat, pupil dilation, digestion: brain to senses, two divisions of the autonomic nervous system: Increases arousal and body resources in preparation for fight or flight. The spinal cord: gray matter inner component, primarily cell bodies, white matter outer area, mainly myelinated axons, dorsal afferent projections carry sensory information from the pns in to the.
