| afferent pathways | Nerve structures through which impulses are conducted from a peripheral part toward a nerve centre. (12 Dec 1998) |
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| autonomic pathways | Nerves and plexuses of the autonomic nervous system. The central nervous system structures which regulate the autonomic nervous system are not included. (12 Dec 1998) |
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| pathological pathways | <biochemistry, immunology> Malignant paraprotein is a form of antibody characteristic of and produced by malignant cells of the mature B-cell type, for example in multiple myeloma. <tumour marker> Its presence in the blood acts as an important marker of disease. (13 Nov 1997) |
| olfactory pathways | Set of nerve fibres conducting impulses from olfactory receptors to the cerebral cortex. It includes the olfactory nerve, olfactory bulb, olfactory tract, olfactory tubercle, anterior perforated substance, and olfactory cortex. (12 Dec 1998) |
| efferent pathways | Nerve structures through which impulses are conducted from a nerve centre toward a peripheral site. (12 Dec 1998) |
| afferent | <anatomy> Moving or carrying inward or toward a central part. Refers to vessels, nerves, etc. For example: blood vessels carrying blood toward the heart, or nerves conducting signals to the brain. Compare: efferent. (09 Feb 1998) |
| afferent fibres | Those that convey impulses to a ganglion or to a nerve centre in the brain or spinal cord. (05 Mar 2000) |
| afferent glomerular arteriole | A branch of an interlobular artery of the kidney that conveys blood to the glomerulus. Synonym: arteriola glomerularis afferens, vas afferens, afferent vessel. (05 Mar 2000) |
| afferent loop syndrome | <syndrome> A complication of gastrojejunostomy, caused by acute or chronic obstruction of the afferent loop due to hernia, intussusception, kinking, volvulus, etc. It is characterised by pain and vomiting of bile-stained fluid and includes acute afferent loop obstruction and bilious vomiting. (12 Dec 1998) |
| afferent lymphatic | A lymphatic vessel entering, or bringing lymph to, a node. Synonym: vas lymphaticum afferens, afferent vessel. (05 Mar 2000) |
| afferent nerve | <anatomy, physiology> A nerve which transmits impulses from the tissues to the brain and spinal cord (for example sensory nerve). (27 Sep 1997) |
| afferent vessel | A vessel carrying blood toward the heart. A vein or venule. (12 Dec 1998) |
| general somatic afferent column | In the embryo, a column of gray matter in the hindbrain and spinal cord, represented in the adult by the sensory nuclei of the trigeminal nerve and relay cells in the dorsal horn. (05 Mar 2000) |
| general visceral afferent column | A column of gray matter in the hindbrain and spinal cord of the embryo, developing into the nucleus of the solitary tract and relay cells of the spinal cord. (05 Mar 2000) |
| vessel, afferent | A vessel carrying blood toward the heart. A vein or venule. Afferent hails from the latin ad meaning toward + ferre, to bear. The opposite of an afferent vessel is an efferent vessel, an artery or arteriole. (12 Dec 1998) |
| relative afferent pupillary defect | An asymmetry of the pupillomotor input between the two eyes; tested by alternating the light from one eye to the other and comparing the direct light reactions. (05 Mar 2000) |