| C5 | fifth cervical nerve; fifth cervical vertebra; fifth component of complement |
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| CV | fifth cranial nerve |
| L1, | L2, L3, L4, L5 first, second, third, fourth, and fifth lumbar vertebrae |
| quint | fifth, quintan [Lat. quintus] |
| S1-S5 | first to fifth sacral nerves |
| F5 | fifth largest |
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| IAA | Interrupted aortic arch |
| IAA | Interruption of the aortic arch |
| pregnancy danger from fifth disease | Caused by a virus known as parvovirus b 19. Symptoms include low-grade fever, fatigue, a slapped cheeks rash, and a rash over the whole body. The illness is not serious in children. Pregnant women (who have not previously had the illness) should avoid contact with patients who have fifth disease. The virus can infect the foetus prior to birth. And, while no birth defects have been reported as a result of fifth disease, it can cause the death of the unborn foetus. The risk of foetal death is 5-10% if the mother becomes infected. (12 Dec 1998) |
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| disease, fifth | Erythema infectiosum, In the pre-vaccination era, it was frequently the fifth disease that a child would develop. It is caused by a virus known as parvovirus B 19. Symptoms include low-grade fever, fatigue, a slapped cheeks rash, and a rash over the whole body. While the illness is not serious in children, 80% of adults have joint aches and pains (arthritis) which may become long-term with stiffness in the morning, redness and swelling of the same joints on both sides of the body (a symmetrical arthritis), most commonly involving the knees, fingers, and wrists. Pregnant women (who have not previously had the illness) should avoid contact with patients who have fifth disease. The fifth disease virus can infect the foetus prior to birth. And, while no birth defects have been reported as a result of fifth disease, it can cause the death of the unborn foetus. The risk of foetal death is 5-10% if the mother becomes infected. (12 Dec 1998) |
| tuberosity of fifth metatarsal | A tubercle at the base of this bone to the posterior part of which is attached the tendon of the peroneus brevis muscle. Synonym: tuberositas ossis metatarsalis quinti. (05 Mar 2000) |
| fifth | 1. Next in order after the fourth; the ordinal of five. 2. Consisting of one of five equal divisions of a thing. Fifth monarchy men, a fanatical sect in England, of the time of the commonwealth, who maintained that there would be a fifth universal monarchy, during which Christ would reign on earth a thousand years. Fifth wheel, a horizontal wheel or segment above the fore axle of a carriage and beneath the body, forming an extended support to prevent careening. Origin: OE. Fifte, fifthe, AS. Fifta. See Five. Source: Websters Dictionary (01 Mar 1998) |
| fifth cranial nerve | <anatomy, nerve> The trigeminal nerve is responsible for sensory enervation of the face and motor enervation to muscles of mastication (chewing). There are three divisions of the fifth cranial nerve, ophthalmic, maxillary and mandibular. Lesions of the sensory root to the trigeminal nerve can result in pain or loss of sensation in the face. Lesion of the motor root result in deviation of the jaw toward the paralysed side and difficulty chewing. Synonym: cranial nerve V. (27 Sep 1997) |
| fifth disease | <disease> An acute viral infection (human parvovirus) in children that manifests with a fever and a unique facial rash (slapped cheek appearance). After 1-2 days the rash will often spread to the extremities and trunk. The illness is nonserious and self-limiting. Environmental factors such as sunlight, hot baths and emotional factors can cause the rash to recur. Referred to as fifth disease or erythema infectiosum. (27 Sep 1997) |
| fifth finger | The little or fifth finger. Synonym: digitus minimus, digitus quintus, digitus auricularis, fifth finger. (05 Mar 2000) |
| fifth ventricle | A slitlike, fluid-filled space of variable width between the left and right transparent septum, which occurs in less than 10% of human brains and may communicate with the third ventricle. Synonym: cavum septi pellucidi, Duncan's ventricle, fifth ventricle, pseudocele, pseudoventricle, sylvian ventricle, ventricle of Sylvius, ventriculus quintus, Vieussens' ventricle, Wenzel's ventricle. (05 Mar 2000) |
| abdominothoracic arch | A bell-shaped line defined by the lower end of the sternum and the costal arches on each side, constituting a boundary line between the anterolateral portions of the thoracic and abdominal walls. (05 Mar 2000) |
| alveolar arch of mandible | The free margin of the alveolar process of the mandible. Synonym: arcus alveolaris mandibulae, limbus alveolaris. (05 Mar 2000) |
| alveolar arch of maxilla | The free border of the alveolar process of the maxilla. Synonym: arcus alveolaris maxillae, limbus alveolaris. (05 Mar 2000) |
| anterior arch of atlas | An arch that connects the lateral masses of the atlas anteriorly and articulates with the anterior articular facet of the dens of the axis. Synonym: arcus anterior atlantis. (05 Mar 2000) |
| anterior palatine arch | One of a pair of ridges or folds of mucous membrane passing from the soft palate to the side of the tongue; it encloses the palatoglossus muscle and forms anterior margin of the tonsillar fossa. Also demarcates oral cavity from isthmus of fauces. Synonym: arcus palatoglossus, anterior palatine arch, anterior pillar of fauces, arcus glossopalatinus, glossopalatine arch, glossopalatine fold. (05 Mar 2000) |
| aortic arch | The curved portion between the ascending and descending parts of the aorta; it begins as a continuation of the ascending aorta posterior to the sternal angle, runs posteriorly and slightly to the left as it passes over the root of the left lung, and becomes the descending aorta as it reaches and begins to course along the vertebral column; it gives rise to the brachiocephalic trunk, the left common carotid and left subclavian arteries. Any member of the several pairs of arterial channels encircling the embryonic pharynx in the mesenchyme of the brachial arches; there are potentially six pairs, but in mammals the fifth pair is poorly developed or absent. The first and second pairs are functional only in very young embryos; the third pair is involved in the formation of the carotids; the fourth arch on the left is incorporated in the arch of the aorta; the sixth pair forms the proximal part of the pulmonary arteries. A series of arterial channels encircling the embryonic pharynx in the mesenchyme of the branchial arch's. There are potentially six pairs, but in mammals the fifth pair is poorly developed or absent. The first and second pairs are functional only in very young embryos; the third pair is involved in the formation of the carotids; the fourth arch on the left is incorporated in the arch of the aorta; the sixth pair forms the proximal part of the pulmonary arteries. Synonym: arcus aortae. (05 Mar 2000) |
| aortic arch syndrome | <syndrome> Aortic arch syndrome, also referred to by many as vertebral-basilar artery disease, carotid artery occlusive syndrome and subclavian steal syndrome is characterised by a constellation of signs and symptoms which occur secondary to abnormalities in the major arteries which extend off of the aortic arch. These abnormalities are structural and most often secondary to the effects of atherosclerosis, blood clots, trauma or a congenital abnormality. Symptoms of this condition include various neurologic symptoms, reduction in pulse and changes in blood pressure. (27 Sep 1997) |
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