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28 Cards in this Set
- Front
- Back
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What are the anatomic divisions of the PNS?
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The 31 spinal nerves and the 12 cranial nerves
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What are the divisions of the Autonomic nervous system?
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The control of the body's internal environment is divided into sympathetic and parasympathetic divisions.
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What type of nerves are present in the autonomic nerves system?
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General Visceral Afferent and General Visceral Efferent
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Where are the cell bodies of General Somatic Efferent?
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They exist in the ventral horn of the gray matter of the spinal cord and exit the SC via the ventral root.
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What are the target tissues of General Visceral Efferent nerves?
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Glands, Smooth Muscle, and Cardiac Muscle
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What nerves consist of a 1 neuron system?
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GSA, GVA, and GSE
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Where are the cell bodies of sympathetic nerves?
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Cord Levels T1-L2 where the cell bodies exist in the lateral horns
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Where are the cell bodies of the parasympathetic nerves?
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CNS for cranial nerves 3, 7, 9, and 10 and in the Lateral horns of cord levels S 2, 3, and 4.
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What are the functional divisions of the PNS?
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The Somatic and the Autonomic nervous systems
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What are the functions of the Somatic Nervous system?
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The skin, bones, joints, mucous membranes, and skeletal muscle. These include GSE for muscles, and GSA which has extero and propioceptors.
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What functional division of the PNS controls interoceptors?
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The subconscious autonomic nervous system
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Where do lateral horns exist?
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T1-L2 and S2, 3, and 4
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Which is longer: The central or peripheral process of a sensory neuron?
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The Peripheral process of the neuron going from the DRG to the tissue.
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What are some of the basic responses of the sympathetic nervous system?
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Increased heart rate, sweating, vasoconstriction, dilation of respiratory tree
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What are some of the basic responses of the parasympathetic nervous system?
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Decreased heat rate and Increased gut peristalsis, glandular secretions (including those in the respiratory and digestive systems
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What is another name for cranial nerve number 10?
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The Vagus nerve is considered the wanderer because it is the longest of the cranial nerve and covers many organ systems
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What is the neurotransmitter of sympathetic ganglion?
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ACh
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Which are longer: the preganglionic or postganlionic neurons of the sympathetic system?
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The postganglionic neurons
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What is the neurotransmitter of the postganglionic axon to the target tissue?
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NE except the sweat glands which still use ACh
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Which are longer: the preganglionic or postganglionic neurons of the parasympathetic system?
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The preganglionic axons
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What neurotransmitter is used in the parasympathetic system?
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ACh
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Where are sympathetic ganglia located?
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Paravertebral and prevertebral
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What is a better way to describe prevertebral ganglia?
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Preaortic because they are anterior to the abdominal aorta
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What are the three ways that preganglionic sympathetic axons get into a sympathetic chain?
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Synapse in a ganglia at the same level
Ascend within sympathetic trunk or descend in sympathetic trunk before synapse Splanchnic nerve which leaves the root and synapses in a preaortic ganglia |
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What is a splanchnic nerve?
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A nerve that contains long preganglionic autonomic fibers
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If preganglionics in the sympathetic nervous system are generally short, what about splanchnic nerves?
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They are the one exception to the rule
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Which cord levels communicate with gray comunicans?
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All of them whereas only levels T1-L2 also have white comunicans
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Which splanchnic nerves are parasympathetic?
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Pelvic Splanchnic nerves
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