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9 Cards in this Set
- Front
- Back
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Somatic motor division |
Aware of, have control. Efferent - away from CNS One neuron transmits info to one motor unit Axon is myelinated |
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Autonomic Nervous system |
Unaware of, have no control two neurons between CNS and effector: Neuron 1: cell body in CNS and axon in PNS Neuron 2 has cell body and axon in PNS |
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Visceral |
Organs in abdomen and thorax |
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Neurotransmitter for somatic motor division |
Acetylcholine (ACh) |
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Autonomic Subdivisions |
Sympathetic - prepares body for stress responses includes heart rate, constricting blood vessels to skin and viscera, decrease in gastric motility and salivation, increase in pupil size and sweating. FIGHT OR FLIGHT Parasympathetic - prepares body for rest (opposite reactions) REST OR DIGEST
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Which structure of autonomic subdivision is closer to the CNS |
Sympathetic ganglion |
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Route of the Sympathetic |
Axon of preganglionic neurons leaves CNS at thoracolumbar (T1 to T2), axons extends a short distance, synapse and cell body of post-ganglionic are in sympathetic ganglion |
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What are the two types of Sympathetic Ganglia |
Chain: 21-23 pairs, alongside vertebral column, place where preganglionic axons synapse Collateral: 3 main collateral ganglia, contain preganglionic axons that did not make synass in chain ganglia |
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Route of the Parasympathetic |
Axon of preganglionic neuron leaves CNS at cranial and sacral, axon is large, synapse and post-ganglionic neuron cell body in ganglion in or near the effector organs |
