| HSAN | hereditary sensory and autonomic neuropathy |
|---|---|
| PAB | para-aminobenzoate; performance assessment battery; pharmacologic autonomic block; poly(A)-binding [... |
| PAF | paroxysmal atrial fibrillation; peroxisomal assembly factor; phosphodiesterase-activating factor; pl... |
| TAB | total autonomic blockage; typhoid, paratyphoid A, and paratyphoid B [vaccine] |
| MDS | Master of Dental Surgery; maternal deprivation syndrome; medical data screening; medical data system... |
| autonomic nuclei | Nuclei located in the spinal cord (T1-L2, S2-S4) and in the brainstem (Edinger-Westphal nucleus, superior and inferior salivatory nuclei, dorsal vagal nucleus and parts of the ambiguus nucleus) from which general visceral efferent preganglionic fibres arise; may be sympathetic (T1-L2) or parasympathetic (craniosacral); hypothalamic nuclei/areas function in concert with autonomic nuclei. (05 Mar 2000) |
|---|---|
| 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) |
| autonomic plexuses | Plexus's of nerves in relation to blood vessels and viscera, the component fibres of which are sympathetic, parasympathetic, and sensory. Synonym: plexus autonomici. (05 Mar 2000) |
| ganglia, autonomic | Clusters of neurons and their processes in the autonomic nervous system. In the autonomic ganglia, the preganglionic fibres from the central nervous system synapse onto the neurons whose axons are the postganglionic fibres innervating target organs. The ganglia also contain intrinsic neurons and supporting cells and preganglionic fibres passing through to other ganglia. (12 Dec 1998) |
| ganglia of autonomic plexuses | Autonomic ganglia lying in plexuses of autonomic fibres, e.g., the coeliac and inferior mesenteric ganglia of the sympathetic, and the small parasympathetic ganglia of the myenteric plexus. Synonym: ganglia plexuum autonomicorum. (05 Mar 2000) |
| neuropathies, hereditary sensory and autonomic | A group of inherited disorders in which there is selective involvement of the peripheral sensory and autonomic neurons and degeneration of fibres by axonal atrophy and degeneration. Five types of disorders have been described and classified type I through type v. (12 Dec 1998) |
| coeliac (nervous) plexus | The most substantial, superior portion of the abdominal aortic plexus lying anterior to the aorta at the level of origin of the coeliac trunk (vertebral level T-12); the coeliac ganglia lie within the plexus; it is formed by contributions from the greater splanchnic and vagus (especially the posterior or right vagus) nerves and communicating branches to and from the superior mesenteric and renal plexuses and ganglia; most sympathetic, parasympathetic and visceral afferent fibres serving the abdominal viscera pass through this plexus. Synonym: plexus coeliacus, solar plexus. (05 Mar 2000) |
| Henle's nervous layer | The layers of the retina from the outer plexiform to the nerve fibre layer inclusive. Synonym: Henle's nervous layer. (05 Mar 2000) |
| high pressure nervous syndrome | <syndrome> A syndrome of tremors, nausea, dizziness, and decreased motor and mental performance which develops in those who dive deeply (c. 1000 ft) usually breathing a mixture of oxygen and helium. Nitrogen is not a factor as it is in inert gas narcosis. (12 Dec 1998) |
| nervous | 1. Possessing nerve; sinewy; strong; vigorous. "Nervous arms." 2. Possessing or manifesting vigor of mind; characterised by strength in sentiment or style; forcible; spirited; as, a nervous writer. 3. Of or pertaining to the nerves; seated in the nerves; as, nervous excitement; a nervous fever. 4. Having the nerves weak, diseased, or easily excited; subject to, or suffering from, undue excitement of the nerves; easily agitated or annoyed. "Poor, weak, nervous creatures." (Cheyne) 5. Sensitive; excitable; timid. "Our aristocratic class does not firmly protest against the unfair treatment of Irish Catholics, because it is nervous about the land." (M. <anatomy> Arnold) Nervous fever, the specialized coordinating apparatus which endows animals with sensation and volition. In vertebrates it is often divided into three systems: the central, brain and spinal cord; the peripheral, cranial and spinal nerves; and the sympathetic. See Brain, Nerve, Spinal cord, under Spinal, and Sympathetic system. In Appendix. Nervous temperament, a condition of body characterised by a general predominance of mental manifestations. Origin: L. Nervosus sinewy, vigorous: cf. F. Nerveux. See Nerve. Source: Websters Dictionary (01 Mar 1998) |
| nervous asthenopia | Asthenopia due to functional or organic nervous disease. (05 Mar 2000) |
| nervous asthma | Asthma precipitated by psychic stress. (05 Mar 2000) |
| nervous breakdown | Nonmedical term for an emotional or mental illness; often a euphemism for a psychiatric disorder. (05 Mar 2000) |
| nervous colon syndrome | <syndrome> A common gastrointestinal disorder characterised by abdominal pain, bloating, mucous in stools, and irregular bowel habits with alternating diarrhoea and constipation, symptoms that tend to be chronic and wax and wane over the years. Although nervous colon syndrome can cause chronic recurrent discomfort, it appears to be an abnormal condition of gut contractions (motility) and does not lead to any serious organ problems. Diagnosis usually involves excluding other illnesses. Treatment is directed toward relief of symptoms and includes high fibre diet, exercise, relaxation techniques, avoidance of caffeine, milk products and sweeteners, and medications. Alternative names include irritable bowel syndrome, spastic colitis, and mucus colitis. (12 Dec 1998) |
| nervous dyspepsia | Dyspepsia associated with nervousness, tension, or anxiety. Synonym: functional dyspepsia. (05 Mar 2000) |