The reason as to why the sympathetic division of the autonomic nervous system (ANS) is called the thoracolumbar division even when it extends to the sacral region from the cervical region. Introduction: Each and every division of the ANS is composed of two motor neurons. The first motor neuron has the cell body in the spinal cord or the brain and is called preganglionic neuron. The axon of this neuron exits the central nervous system (CNS) and extends to the autonomic ganglion. The second neuron is known as postganglionic neuron that synapses with the preganglionic neuron and extends till the visceral effector.

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Chapter 15, Problem 3CP

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The reason as to why the sympathetic division of the autonomic nervous system (ANS) is called the thoracolumbar division even when it extends to the sacral region from the cervical region.

Introduction:

Each and every division of the ANS is composed of two motor neurons. The first motor neuron has the cell body in the spinal cord or the brain and is called preganglionic neuron. The axon of this neuron exits the central nervous system (CNS) and extends to the autonomic ganglion. The second neuron is known as postganglionic neuron that synapses with the preganglionic neuron and extends till the visceral effector.

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Why does the sympathetic division produce simultaneous effects throughout the body, in contrast to parasympathetic effects, which typically are localized to specific organs?

AUTONOMIC NERVOUS SYSTEM STRUCTURE FUNCTION(S)/CHARACTERISTIC(S) SYMPATHETIC DIVISION 1 Preganglionic neuron 2 Postganglionic neuron 3 Gray horns of the spinal cord 4 Dorsal Roots of the spinal cord 5 Ventral Roots of the spinal cord 6 Dorsal Rami 7 Ventral Rami 8 White ramus communicans 9 Gray ramus communicans 10 Sympathetic trunk ganglion (Paravertebral ganglia) 11 Superior cervical ganglion 12 Middle cervical ganglion 13 Inferior cervical ganglion 14 14a 14b 14c Prevertebral ganglia Celiac ganglion Superior mesenteric ganglion Inferior mesenteric ganglion PARASYMPATHETIC DIVISION 15 Preganglionic neuron 16 Postganglionic neuron 17 CN III Oculomotor nerve 18 CN VII Facial nerve…

Why is sympathetic action diffuse and long lasting, while parasympathetic is local and short-lived? What would happen to body systems during a stressful situation if these characteristics were reversed?