| UV | ultraviolet; umbilical vein; ureterovesical; Uppsala virus; urinary volume |
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| UVC | umbilical venous catheter |
| PFC | Persistent Fetal Circulation; 태아 순환 지속증 = PPHN |
| AABCC | alertness (consciousness), airway, breathing, circulation, cervical spine |
| ABC | absolute basophil count; absolute bone conduction; acalculous biliary colic; acid balance control; a... |
| hypophysial portal circulation | A capillary network that carries hypophyseotropic hormones from the hypothalamus, where they are secreted into blood, to their sites of action in the anterior hypophysis. See: portal circulation, hypophysis, hypothalamus. Synonym: hypophyseoportal system, hypophysial portal circulation, hypophysial portal system, hypophysioportal system, hypothalamohypophysial portal circulation, hypothalamohypophysial portal system. (05 Mar 2000) |
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| hypothalamohypophysial portal circulation | A capillary network that carries hypophyseotropic hormones from the hypothalamus, where they are secreted into blood, to their sites of action in the anterior hypophysis. See: portal circulation, hypophysis, hypothalamus. Synonym: hypophyseoportal system, hypophysial portal circulation, hypophysial portal system, hypophysioportal system, hypothalamohypophysial portal circulation, hypothalamohypophysial portal system. (05 Mar 2000) |
| splanchnic circulation | The circulation of blood through the vessels supplying the abdominal viscera. (12 Dec 1998) |
| sulcus of umbilical vein | <anatomy, vein> The sulcus on the foetal liver occupied by the umbilical vein. Synonym: sulcus venae umbilicalis. (05 Mar 2000) |
| systemic circulation | The circulation of blood through the arteries, capillaries, and veins of the general system, from the left ventricle to the right atrium. Synonym: greater circulation. (05 Mar 2000) |
| thebesian circulation | The system of smaller veins in the myocardium. (05 Mar 2000) |
| embryonic circulation | The basic plan of the circulation of a young mammalian embryo, at first similar to that in aquatic forms, with an unpartitioned heart and conspicuous aortic arches in the branchial region; as gestation progresses, the arrangement of the major blood vessels gradually approaches that of an adult, but the routing of blood through the heart, characteristic of an adult, cannot be attained until lung breathing begins at birth. (05 Mar 2000) |
| enterohepatic circulation | Recycling through liver by excretion in bile, reabsorption from intestines into portal circulation, passage back into liver, and re-excretion in bile. (12 Dec 1998) |
| extracorporeal circulation | Diversion of blood flow through a circuit located outside the body but continuous with the bodily circulation. (12 Dec 1998) |
| umbilical | <anatomy> As pertains to the umbilicus (belly button). (27 Sep 1997) |
| umbilical arteries | Either of a pair of arteries originating from the internal iliac artery and passing through the umbilical cord to carry blood from the foetus to the placenta. (12 Dec 1998) |
| umbilical artery | <anatomy, artery> Before birth the arteria is a continuation of the internal iliac; after birth it is obliterated between the bladder and umbilicus, forming the medial umbilical ligament, the remaining portion, between the internal iliac artery and bladder, being reduced in size and giving off the superior vesical arteries. Synonym: arteria umbilicalis. (05 Mar 2000) |
| umbilical cord | The flexible structure, giving passage to the umbilical arteries and vein, which connects the embryo or foetus to the placenta. (12 Dec 1998) |
| umbilical cyst | A small red sessile or pedunculated tumour at the umbilicus in an infant; it is due to the persistence of a segment of the vitellointestinal duct. Synonym: umbilical cyst. (05 Mar 2000) |
| umbilical duct | A narrow tube present in the early embryo that connects the midgut of the embryo (through the umbilical opening) to the yolk sac outside the embryo. Later in development, the yolk stalk is usually obliterated but a remnants of it may persist, most commonly as a finger-like protrusion from the small intestine known as meckel's diverticulum. Found in 2-4% of people, meckel's diverticulum may become inflamed much like the appendix and require surgical removal. The yolk stalk is also called the umbilical duct, vitelline duct, or oomphalomesenteric duct. (12 Dec 1998) |