| uncinate fasciculus of Russell | Fastigial efferent fibres that cross with the cerebellum and descend over the lateral surface of the superior cerebellar peduncle; these fibres largely terminate in the vestibular nuclei and the reticular formation of the pons and medulla. Synonym: hooked bundle of Russell, uncinate fasciculus of Russell. (05 Mar 2000) |
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| uncinate fit | Seizures with elaborate and multiple sensory, motor, and/or psychic components. A common feature is the clouding of consciousness and amnesia for the event. Some clinical manifestations may include more complex behaviours like burst of anger, emotional outbursts, fear or automatisms. The EEG often reveals spike discharges in the temporal lobe during sleep. (27 Sep 1997) |
| uncinate gyrus | Origin: L. <zoology> A hook or claw. Source: Websters Dictionary (01 Mar 1998) |
| uncinate pancreas | A portion of the head of the pancreas that hooks around posterior to the superior mesenteric vessels, sometimes into the "nutcracker" formed by the superior mesenteric artery and abdominal aorta. Synonym: processus uncinatus pancreatis, lesser pancreas, pancreas minus, small pancreas, uncinate pancreas, unciform pancreas, Willis' pancreas, Winslow's pancreas. (05 Mar 2000) |
| uncinate process of ethmoid bone | A sickle-shaped process of bone on the medial wall of the ethmoidal labyrinth below the middle concha; it articulates with the ethmoidal process of the inferior concha and partly closes the orifice of the maxillary sinus. Synonym: processus uncinatus ossis ethmoidalis. (05 Mar 2000) |
| uncinate process of pancreas | A portion of the head of the pancreas that hooks around posterior to the superior mesenteric vessels, sometimes into the "nutcracker" formed by the superior mesenteric artery and abdominal aorta. Synonym: processus uncinatus pancreatis, lesser pancreas, pancreas minus, small pancreas, uncinate pancreas, unciform pancreas, Willis' pancreas, Winslow's pancreas. (05 Mar 2000) |
| uncinatum | <anatomy> The unciform bone. Origin: NL, from L. Uncinatus hooked. Source: Websters Dictionary (01 Mar 1998) |
| uncinus | Origin: L, a hook. <zoology> One of the peculiar minute chitinous hooks found in large numbers in the tori of tubicolous annelids belonging to the Uncinata. Source: Websters Dictionary (01 Mar 1998) |
| uncipressure | Arrest of haemorrhage from a cut artery by pressure with a blunt hook. Origin: L. Uncus, hook (05 Mar 2000) |
| uncircumcision | 1. The absence or want of circumcision. 2. People not circumcised; the Gentiles. Source: Websters Dictionary (01 Mar 1998) |
| unclasp | To loose the clasp of; to open, as something that is fastened, or as with, a clasp; as, to unclasp a book; to unclasp one's heart. Origin: 1st pref. Un- + clasp. Source: Websters Dictionary (01 Mar 1998) |
| unclean | 1. Not clean; foul; dirty; filthy. 2. Ceremonially impure; needing ritual cleansing. "He that toucheth the dead body of any man shall be unclean seven days." (Num. Xix. 11) 3. Morally impure. "Adultery of the heart, consisting of inordinate and unclean affections." Unclean"ly, Unclean"ness, Unclean animals, a wicked spirit; a demon. Origin: AS. Unclne. See Unnot, and Clean. Source: Websters Dictionary (01 Mar 1998) |
| unclutch | 1. To open, as something closely shut. "Unclutch his griping hand." 2. <mechanics> To disengage, as a clutch. Origin: 1st pref. Un- + clutch. Source: Websters Dictionary (01 Mar 1998) |
| unco-ossified | Not co-ossified; not united into one bone. (05 Mar 2000) |
| uncoating | <molecular biology, virology> Releasing viral nucleic acid from a virus or exposing the interior of a virus enough to facilitate replication by stripping away the outer layers of the viral coat. (09 Oct 1997) |