Psychology 1000 Lecture Notes - Lecture 3: Functional Magnetic Resonance Imaging, Neuroglia, Autonomic Nervous System

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

The nervous system is broken down into two sections. Central nervous system: the brain and spinal cord. Peripheral nervous system: divided into two different systems, the afferent pathways and the efferent pathways. The efferent pathways are divided into the somatic division and. Afferent pathways: neurons that carry signals from the sensory receptor cells to the brain and the spinal cord. Efferent pathways: neurons that carry messages from the brain and spinal cord to effector cells in the muscles and glands. Somatic nervous system: nerve fibers running to skeletal muscles, controls voluntary movements and actions. Autonomic nervous system: controls muscles running to internal organs and glands, controls involuntary processes that occur automatically without conscious thought (ie. breathing, heart rate, blood pressure) Sympathetic division: mobilizes the body"s resources for action when the need arises. Parasympathetic division: dominates under conditions of relaxation, conserves and replenishs body"s energy, decreases heart rate and blood pressure back to a resting rate.