uncus


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Related to uncus: parahippocampal gyrus

uncus

 [ung´kus]
the medially curved anterior part of the hippocampal gyrus. adj., adj un´cal.

un·cus

, pl.

un·ci

(ŭn'kŭs, ŭn'sī), [TA]
1. Any hook-shaped process or structure.
2. The anterior, hooked extremity of the parahippocampal gyrus on the basomedial surface of the temporal lobe; the anterior face of the uncus corresponds to the olfactory cortex, its ventral surface to the entorhinal area; deep to the uncus lies the amygdala (amygdaloid body). Synonym(s): uncinate gyrus, uncus gyri parahippocampalis
[L. a hook, fr. G. onkos]

uncus

/un·cus/ (ung´kus)
1. hook.
2. the medially curved anterior end of the parahippocampal gyrus.un´cal

uncus

(ŭng′kəs)
n. pl. unci (ŭn′sī) Biology
A hook-shaped part or process.

uncus

[ung′kəs]
Etymology: L, hook
1 the hooklike anterior end of the hippocampal gyrus on the temporal lobe of the brain.
2 a hook-shaped structure.

un·cus

, pl. unci (ŭng'kŭs, ŭn'sī) [TA]
1. Any hook-shaped process or structure.
2. The anterior hooked extremity of the parahippocampal gyrus on the basomedial surface of the temporal lobe; the anterior face of the uncus corresponds to the olfactory cortex, its ventral surface to the entorhinal area; deep to the uncus lies the amygdala (amygdaloid body).
Synonym(s): uncinate gyrus.
[L. a hook, fr. G. onkos]

uncus

A hook-shaped part near the front of the temporal lobe of the brain that is concerned with the senses of smell and taste. Disease in this area may produce hallucinations of foul smells.

uncus

the medially curved anterior part of the hippocampal gyrus.
References in periodicals archive ?
1] stalked, removed from Cu2; abdominal tergites curving over sternites (abdomen flattened); uncus reduced, short and rounded; socii present and separate from uncus; gnathos broadly triangular and broadly joined to tegumen; aedeagus blunt and straight or nearly so, lacking a flange; vesica of aedeagus with numerous scalelike cornuti located in a patch; sacculus lacking basal lobe or process; valve lacking lobe; distal process straight or slightly curved, the apex rounded or pointed; costal margin of valve straight or nearly so; valve broadest base to nearly 5/6 its length or nearly straight; cucullus rounded; costal margin of valve lacking a process; transtilla membranous and lacking lateral lobes and vinculum pointed without well developed anterodorsal process.
Uncus slender, broad at base, narrow towards apex; tegumen as long as uncus, broad U-shaped; vinculum longer than tegumen, deep, U-shaped; saccus knob-like.
The main criteria for erecting the new subfamily are very long palpi, forewings split only to their midlength, the entire apex of the uncus, and the presence of the vaginal plate with a characteristic oval cut in the female genitalia.
Uncus bifurcated at base, 1/2 times as long as tegument, each fork medium-long, slender at apex, broad at base; tegumen wide and arc-shaped, socii broad and wide, incurved at apex and strongly setose, shorter than uncus; gnathos degenerated; 1 pulvinus between tegument and valva, finger-shaped protuberance at pulvini; valva clavate, wide and thick at base; cucullus thin and long, strongly sclerotized; juxta similar triangle-shaped; saccus medium-long and thin.
In male genitalia, it resembles Platyptilia periacta Meyrick, 1910 in the shape of the valvae, uncus, and aedeagus, but can be easily distinguished from the latter species by the shape of the saccus and anellus.
All these species are characterized by the claw-shaped apophysis of the appendix, and by the shape of both the uncus and the lamella of the procursus.
10) with uncus trapezoidal, posterior margin emarginated medially, with a digitate process and an elongate, distally-curved, apically-obtuse process posteriolaterally; socius elongate, slender, as long as valva, setose dorsally; V-shaped ridge at junction between uncus and tegumen.
24O-V), but can be readily distinguished from the latter by the shape of uncus, the bifurcate appendix of the male pedipalp and the color pattern of the carapace.
Regarding its main component, Uncariae Ramulus et Uncus, some pharmacological (Ozaki, 1989), central nervous (Harada et al.
Valvae lack projections, uncus bifid, aedeagus long, cylindrical and vesica with several cornuti (see Mielke 1971; Mielke 1993; Mielke & Schroeder 1994).
thus, a particular tibia can have both an uncus and a mucro (Kuschel 1952; thompson 1992).