APA 2134 Lecture Notes - Lecture 3: Frontal Lobe, Myocyte, Saltatory Conduction

• School: University of Ottawa
• Department: Human Kinetics
• Course: APA 2134
• Professor: Glen Kenny

Document Summary

Major divisions of the nervous system: central nervous system : brain, spinal cord, peripheral nervous system, sensory (afferent)- incoming, motor (efferent)-outgoing, somatic: voluntary to skeletal muscles, autonomic: involuntary to viscera, sympathetic and the parasympathetic. Neurons: basic structural unit of nervous system, has the same basic structure everywhere in the body, has three major regions, cell body, dendrites, axon. Cell body: contains nucleus, cell process radiate out. Dendrites: receiciver cell processes, carry impulse toward cell body. Axon: sender cell process, starts at axon hillock, end branches, axon terminals, neurotransmitters. Structure and function of the nervous system: electrical signals for communication between periphery and brain, must be generated by a stimulus, must be progated down the axon, must be transmitted to the next cell in line. Resting membrane potenital: difference in electrical charges between outside and inside of the cell, -70mv, caused by uneven separation of charged ions, polarized.