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Title: Parasympathetic nervous system
Description: Introduction of Parasympathetic Nervous System Origins and Ganglia Preganglionic and Postganglionic Neurons Origins of Preganglionic Neurons
Description: Introduction of Parasympathetic Nervous System Origins and Ganglia Preganglionic and Postganglionic Neurons Origins of Preganglionic Neurons
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Parasympathetic Nervous System
Parasympathetic Nervous System
The parasympathetic nervous system is a subdivision of the autonomic
nervous system, which controls automatic processes in the body like
digestion, heart rate, and respiration
...
Hence, it is sometimes referred to as the "rest and
digest" system, although this term oversimplifies its activities
...
They do not travel directly from the brainstem or spinal cord
to their targets but extend first to clusters of neurons known as ganglia
...
Preganglionic and Postganglionic Neurons
The neurons that travel from the brainstem and spinal cord to the
parasympathetic ganglia are called preganglionic neurons, which synapse
with neurons in the ganglia called postganglionic neurons
...
The
preganglionic and postganglionic neurons of the parasympathetic nervous
system primarily release the neurotransmitter acetylcholine
...
These neurons travel with the cranial nerves to provide
parasympathetic innervation to the head and neck
...
The preganglionic neurons that originate in the
sacral spinal cord come together to form the pelvic nerves, which supply
the organs of the pelvis
Title: Parasympathetic nervous system
Description: Introduction of Parasympathetic Nervous System Origins and Ganglia Preganglionic and Postganglionic Neurons Origins of Preganglionic Neurons
Description: Introduction of Parasympathetic Nervous System Origins and Ganglia Preganglionic and Postganglionic Neurons Origins of Preganglionic Neurons