| common carotid plexus | An autonomic plexus accompanying the artery of the same name formed by fibres from the middle cervical ganglion. Synonym: plexus caroticus communis. (05 Mar 2000) |
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| common cold | A viral upper respiratory tract infection. A contagious illness caused by a number of different types of viruses. Because of the great number of viruses that can cause a cold, the body never builds up resistance (immune) against all of them. For this reason, colds are a frequent and recurring problem. In fact, preschool children average 9 colds a year; those in kindergarten, 12 colds a year; and adolescents and adults, 7 colds per year. Going out into the cold weather has no effect on the spread of a cold. Antibiotics do not help the common cold. (12 Dec 1998) |
| common cold virus | Any of the numerous strains of virus aetiologically associated with the common cold, chiefly the rhinoviruses, but also strains of adenovirus, Coxsackievirus, ECHO virus, and parainfluenza virus. Synonym: cold virus. (05 Mar 2000) |
| common crus of saemicircular ducts | The united, nonampullary ends of the superior and posterior saemicircular ducts. Synonym: crus membranaceum commune ductus saemicircularis, common limb of membranous saemicircular ducts. (05 Mar 2000) |
| common duct | <anatomy> This is the main bile duct, which is formed as the right and left hepatic bile ducts join, this common duct empties bile into the duodenum. (09 Oct 1997) |
| common facial vein | <anatomy, vein> A short vessel formed by the union of the facial vein and the retromandibular vein, emptying into the jugular vein; considered to be a continuation of the facial vein in the NA. Synonym: vena facialis communis. (05 Mar 2000) |
| common fibular nerve | <anatomy, nerve> One of the terminal divisions of the sciatic nerve, diverging from the tibial nerve at the upper end of the popliteal fossa, then coursing with the biceps tendon along the lateral portion of the popliteal space to wind around the neck of the fibula where it divides into the superficial and deep peroneal nerves. The common peroneal nerve, or its deep branch, is the most commonly injured nerve, being located in a lateral subcutaneous position at the fibular neck; a lesion causes a loss of ability to dorsiflex the foot ("foot drop"). Synonym: nervus fibularis communis, nervus peroneus communis, common fibular nerve, lateral popliteal nerve. (05 Mar 2000) |
| common flexor sheath | The synovial sheath that surrounds the eight tendons of the superficial and deep flexors of the digits of the hand as they pass through the carpal canal; it is commonly continuous with the digital sheath of the little finger. Synonym: vagina communis musculorum flexorum, ulnar bursa. (05 Mar 2000) |
| common hepatic artery | <anatomy, artery> Origin, coeliac; branches, right gastric, gastroduodenal, and proper hepatic. Synonym: arteria hepatica communis. (05 Mar 2000) |
| common hepatic duct | The part of the biliary duct system that is formed by the confluence of right and left hepatic ducts. at the porta hepatis it is joined by the cystic duct to become the common bile duct. Synonym: ductus hepaticus communis, hepatocystic duct. (05 Mar 2000) |
| common intermediate | <biochemistry, chemistry> A molecule that is shared by two chemical reactions as a product of the first and a reactant in the second. (09 Oct 1997) |
| common interosseous artery | <anatomy, artery> Origin, ulnar; branches, anterior and posterior interosseous. Synonym: arteria interossea communis. (05 Mar 2000) |
| common ion effect | <chemistry> The influence on an equilibrium by the presence of a substance which contains ions that participate in the equilibrium. (09 Oct 1997) |
| common limb of membranous saemicircular ducts | The united, nonampullary ends of the superior and posterior saemicircular ducts. Synonym: crus membranaceum commune ductus saemicircularis, common limb of membranous saemicircular ducts. (05 Mar 2000) |
| common migraine | A form of migraine headache without the visual prodrome, that is not limited on one side of the head but nevertheless is recognizable as migraine because of the stereotyped course; the tendency to nausea, photophobia, and phonophobia; and the relief produced by sleep. (05 Mar 2000) |