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26 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Autonomic Nervous System
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-motor efferent (+ sensory hh)
-visceral: smooth, cardiac, glands |
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2 components of ANS
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1) sympathetic (thoracolumbar)
2) parasympathetic (craniosacral) |
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Explain 2 neuron system
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1) preganglionic (cell body CNS)
2) postganglionic (cell body outside CNS) |
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somatic vs. autonomic
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voluntary body wall, limbs vs. involuntary (glands, smooth m., cardiac m.)
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Where do all sympathetics begin?
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Spinal cord (T1-L2)
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Remember: preganglionic
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Where do all parasympathetics begin?
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-CN 3, 7, 9, 10
S2-4 |
Remember: preganglionic
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Where are all sympathetic ganglia located?
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-sympathetic chain/ paravertebral chain ganglia
-pre-aortic ganglia |
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Vagus nerve
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only cranial parasympathetic nerve (before midterm)
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Are there any parasympathetic innervations in body wall or limbs?
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NO
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Where do all preganglionic axons enter sympathetic chain?
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white rami communicans
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Where are ganglia found in sympathetic?
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chain ganglia & preaortic ganglia
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@ all levels of spinal cords/nerves
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Where are ganglia found in parasympathetic?
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near target organs
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Who uses white rami communicans?
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pre ganglionic sympathetics
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Who uses grey rami communicans?
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post ganglionic sympathetics destined for body wall/ limbs
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targets that sympathetics innervate in body wall and limbs
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1) sweat glands
2) vascular smooth m. 3) arrector pili muscles |
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What does dorsal root carry?
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sensory only
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What does ventral root carry?
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motor only, both somactic and preganglionic sympathetics
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What do somatic nerves carry?
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postganglionic sympathetics only
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Splachnic nerves leave the sympathetic chain ganglia as..
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1) pre or post ganglionic
2) pre destined for other ganglia |
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Where do pelvic splachnics originate?
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preganglionic sympathetics from S2-4
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Where do the sympathetics of the heart come from?
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postganglionic T1-4
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Where do the parasympathetics of the heart come from?
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Vagus CN10, preganglionic
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What do the sympathetics from T1-4 and parasympathetics from CN10 (Vagus) form?
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cardiac and pulmonary nerve plexuses
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What are the Vagus cardiac branches?
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1) superior from cervical region
2) inferior from cervical region 3) from recurrent laryngeal nerve |
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Where is the superficial plexus of the heart?
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aortic arch btwn phrenic and vagus nn.
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Where is the deep plexus of the heart?
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right of ligamentum arteriosum, inferior and medial to aortic arch
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