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What is Parasympathetic Nervous System

Examining Biological Foundations of Human Behavior
One of the two main divisions of autonomic nervous system which is responsible for stimulation of “rest and digest” or “feed and breed.”
Published in Chapter:
Neurobiology of Sensory Motor Systems and Internal Environment
Pradeep Kallollimath (Dharwad Institute of Mental Health and Neurosciences, India)
Copyright: © 2020 |Pages: 20
DOI: 10.4018/978-1-7998-2860-0.ch005
Control of motor function—our activities like walking, lifting an object, writing, etc.—is accomplished through integrated and coordinated action of motor neurons. Motor neurons can be classified into two broad categories: upper motor neurons and lower motor neurons. Upper motor neurons have cell bodies in the motor cortex of brain and carry the impulses from cortex to spinal cord segment. Cell bodies of lower motor neurons are located in the anterior horn of spinal cord. Axons of lower motor neuron end in neuromuscular junction, and excitation of muscle fibres leads contraction of muscle. Different types of receptors carry different sensations like touch, pain, position, and vibration through sensory nerve fibres. Fibers mediating fine touch and proprioception ascend in the dorsal columns to the medulla, where they synapse in the gracile and cuneate nuclei. This chapter explores the neurobiology of sensory motor systems and the internal environment.
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Prediction of Menstrual Cycle Phase by Wearable Heart Rate Sensor
Along with the sympathetic nervous system, one of the two branches of the autonomic nervous system. Although the major role of the cardiac parasympathetic nervous system is to decrease the heart rate, it also has an important role to suppress the occurrence of fatal arrhythmias in the destabilized heart by the sympathetic stimulation.
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