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(Index, Outline)
Special somatic afferent (SSA) refers to afferent nerves of the special senses. Examples of nerves containing SSA fibers include the optic nerve and the vestibulocochlear nerve.[1]
References[]
- ↑
Mehta, Samir et al. Step-Up: A High-Yield, Systems-Based Review for the USMLE Step 1. Baltimore, MD: LWW, 2003.
External links[]
Histology: nervous tissue
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| Neurons (gray matter)
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soma, axon (axon hillock, axoplasm, axolemma, neurofibril/neurofilament), dendrite (Nissl body, dendritic spine, apical dendrite, basal dendrite)
types (bipolar, pseudounipolar, multipolar, pyramidal, Purkinje, granule)
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| Afferent nerve/Sensory nerve/Sensory neuron
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GSA, GVA, SSA, SVA, fibers (Ia, Ib or Golgi, II or Aβ, III or Aδ or fast pain, IV or C or slow pain)
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| Efferent nerve/Motor nerve/Motor neuron
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GSE, GVE, SVE, Upper motor neuron, Lower motor neuron (α motorneuron, γ motorneuron)
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| Synapses
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neuropil, synaptic vesicle, neuromuscular junction, electrical synapse - Interneuron (Renshaw)
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| Sensory receptors
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Free nerve ending, Meissner's corpuscle, Merkel nerve ending, Muscle spindle, Pacinian corpuscle, Ruffini ending, Olfactory receptor neuron, Photoreceptor cell, Hair cell, Taste bud
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| Glial cells
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astrocyte, oligodendrocyte, ependymal cells, microglia, radial glia
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| Myelination (white matter)
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Schwann cell, oligodendrocyte, nodes of Ranvier, internode, Schmidt-Lanterman incisures, neurolemma
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| Related connective tissues
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epineurium, perineurium, endoneurium, nerve fascicle, meninges
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