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Efferent |
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efferent /ef·fer·ent/ (ef´er-ent) 1. conveying away from a center. 2. something that so conducts, as an efferent nerve.
Efferent Refers to peripheral nerves that carry signals away from the brain and spinal cord. These nerves carry out motor and autonomic functions. Mentioned in: Peripheral Neuropathy efferent (ef´ adj conveying away from a center toward the periphery. efferent nerves, n.pl See nerves, efferent. efferent conducting or progressing away from a center or specific site of reference, as an efferent nerve. efferent arterioles see efferent arteriole. efferent ductules conducting tubules from the rete testis to the head of the epididymis, forming part of the transport mechanism for spermatozoa in the testis. ? e's small nerves supplying intrafusal muscle fibers. efferent nerve any nerve that carries impulses from the central nervous system toward the periphery, as a motor nerve. See also neuron. |
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Several reasons explain the poor prognosis associated with mucosal melanoma: (1) the nonspecific nature of its symptoms leads to delays in diagnosis, (2) the tumor affects many older people whose immune function is inefficient, (3) the rich vascular and lymphatic efferents of the mucosa favor early metastasis, and (4) mucosal melanoma is histologically aggressive. Delayed bradycardia in these animals is triggered by direct vagal nerve inputs to the heart, which would arise from the activation of cholinergic vagal efferents of the parasympathetic nervous system. 25-28) In its conventional form, TENS has been shown to selectively activate large-diameter A[beta] fibers without concurrently activating small-diameter A[delta] and C-fibers or muscle efferents, which leads to inhibition of ongoing activity in second-order nociceptive neurons. |
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