HHP 1110 Lecture Notes - Sensory System, Neuroglia, Axon Hillock

• School: University of Iowa
• Department: Health and Human Physiology
• Course: HHP 1110

Document Summary

Nervous tissue & neurons ch 14a overview of the nervous system organization. 2 models to categorize information flow across the body: structural organization, functional organization structural organization. Subdivisions: sensory nervous system, motor nervous system sensory nervous system. Also known as the afferent nervous system. Receives sensory information from receptors in pns & transmits it to cns. 2 components: somatic sensory: gathering & relay of info that is consciously perceived, visceral sensory: information that is not consciously perceived motor nervous system. Also known as the efferent nervous system. Sends impulses from cns through pns to muscles & glands. 2 systems: somatic motor: voluntary actions, autonomic motor: involuntary actions cytology of nervous tissue. 2 distinct types of cells within the nervous system: neurons (nerve cells): information transfer, glial cells: helper cells neuron characteristics. Excitable: capable of generating electrical signals in response to stimuli. Conductivity: can propagate electrical signals microscopic anatomy of neurons structural characteristics.