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14 Cards in this Set
- Front
- Back
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Male PNS efferents
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Vasodilation of arteries, excited by sliding and massaging
Erection |
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Male SNS efferents
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Emmission of semen into posterior urethra
Epi released, smooth m contraction propels semen into posterior urethra |
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Male SNS efferents
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Ejaculation of semen
Epi released, smooth m contraction propels semen into posterior urethra |
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Lack of engorgement
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Detumenscence
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Innervation of genitalia
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Rubbing-->dorsal n (branch of pudendal n)-->activation of PS cavernous nerve-->vasodilation-->release vasodilatory substances (Ach, VIP, NO)
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Both legs paralyzed
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Paraplegia
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SC lesion involving nerve roots to arms (above T2)
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Quadriplegic
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No sensation or motor fxn below level of lesion
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Complete lesion
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Autonomic dysreflexia (hyperreflexia)
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Occurs with lesions T6 and up
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Lesion at C6
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Extensor carpi radialis longus and brevis, allowing wrist extension
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-Neurons or glial cells die immediately due to rapid influx of Ca and release of excitatory neurotransmitters
-Demyelination occurs |
primary zone (mechanical destruction of cord tissue)
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-Vascular or inflammation destruction
-Apoptosis predominates -macrophages and astrocytes proliferate forming cyst filled with CSF |
Secondary Zone (Penumbra)
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Mechanism that guide regenerating axons
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1. Axon-attracting molecules: CAM, Netrin
2. Axon repulsing molecules: semaphorins, Netrins 3. Antibodies to nogo |
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Neurotrophic growth factors
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1. BDNF
NT-3 NT-4 NGF |
