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14 Cards in this Set
- Front
- Back
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Differentiate the activities of the visceromotor and viscerosensory systems. |
1. Sympathetic nervous system – fight or flight
2. Parasympathetic nervous system – rest and digest 3. Non-pain stimuli: normal reflexive information 4. Visceral pain: distension, ischemia, or injury |
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What is the pre-synaptic sympathetic pathway to reach the paravertebral ganglia |
- intermediolateral cell column - exits through anterior roots - spinal nerve - white rami communicans - paravertebral ganglia (this pathway is true of all sympathetics) |
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What is the sympathetic pathway to reach somatic structures |
- paravertebral ganglion - gray ramus - anterior and/or posterior rami - sweat glands, arrector pili, precapillary sphincter |
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What is the sympathetic pathway to reach the heart |
- paravertebral ganglion or ascends prior to synapse - cardiopulmonary splanchnic nerve - cardiopulmonary plexus - bronchi or coronary arteries |
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What is the location of the pre-synaptic cell bodies in the SNS |
- intermediolateral cell column |
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What is the location of pre-synaptic cell bodies in the PNS |
- vagus nerve.....or in the brain |
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What is the location of post-synaptic cell bodies in the SNS |
- exits ganglion as cardiopulmonary splanchnic nerve |
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What is the location of post-synaptic cell bodies in the PNS |
- exits on target organ |
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What is the pathway painful viscerosensory stimuli takes from the heart back to the central nervous system |
1. Visceral pain stimuli travel to the spinal cord along the sympathetic nerves that supply each organ. Cardiopulmonary plexus to Cardiopulmonary splanchnic nerves to thoracic and cervical paravertebral ganglia to white ramus to spinal nerve to posterior root to posterior horn of spinal cord
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What is the pathway non-painful viscerosensory stimuli takes from the heart back to the central nervous system |
Visceral non-pain stimuli (reflexes) follow the parasympathetic nerves backwards to reach the central nervous system |
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In 2 or 3 words, describe the effect of parasympathetic stimulation on heart rate, contractility, and AV nodal conduction. |
- it decreases |
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In 2 or 3 words, describe the effect of sympathetic stimulation on heart rate, contractility, and AV nodal conduction. |
- it increases |
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What are the neurotransmitters and the receptors at the ganglia and at the target organ for parasympathetic innervations to the heart |
1. Nicotinic – located in ganglia
2. Muscarinic – located in effector organ |
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What are the neurotransmitters and the receptors at the ganglia and at the target organ for sympathetic innervations to the heart |
1. Nicotinic Ach receptor
2. Nicotinic Ach receptor – Epinephrine 3. Adrenergic norepinephrine receptor |
