ansa peduncularis


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ansa

 [an´sah] (pl. an´sae) (L.)
a looplike structure.
ansa cervica´lis a nerve loop in the neck attached in front and above to the hypoglossal nerve and behind to the upper cervical spinal nerves. Its hypoglossal attachment is misleading since this part of the loop ultimately rejoins the upper spinal nerves. Called also ansa hypoglossi.
ansa of Henle Henle's loop.
ansa hypoglos´si ansa cervicalis.
ansa lenticula´ris a small nerve fiber tract arising in the globus pallidus and joining the anterior part of the ventral thalamic nucleus.
ansa nephro´ni Henle's loop.
an´sae nervo´rum spina´lium loops of spinal nerves joining the anterior spinal nerves.
ansa peduncula´ris peduncular loop: a complex grouping of nerve fibers connecting the amygdaloid nucleus, piriform area, and anterior hypothalamus, and various thalamic nuclei.

an·sa pe·dun·cu·la·'ris

[TA]
a complex fiber bundle curving around the medial edge of the internal capsule and connecting the anterior part of the temporal lobe (temporal cortex), amygdala, and olfactory cortex with the mediodorsal nucleus of the thalamus; it enters the thalamus as a component of the inferior thalamic peduncle, which also contains a major part of the fibers connecting the mediodorsal nucleus to the orbitofrontal cortex.

an·sa pe·dun·cu·la·ris

(an'să pe-dŭnk-yū-lā'ris) [TA]
A complex fiber bundle curving around the medial edge of the internal capsule and connecting the anterior part of the temporal lobe (temporal cortex), amygdala, and olfactory cortex with the mediodorsal nucleus of the thalamus; it enters the thalamus as a component of the inferior thalamic peduncle, which also contains a major part of the fibers connecting the mediodorsal nucleus to the orbitofrontal cortex.

Reil,

Johann C., German physician, neurologist, and histologist, 1759-1813.
circular sulcus of Reil - a semicircular fissure. Synonym(s): circular sulcus of insula; limiting sulcus of Reil
island of Reil - an oval region of the cerebral cortex overlying the extreme capsule, lateral to the lenticular nucleus, buried in the depth of the fissura lateralis cerebri (sylvian fissure). Synonym(s): insula; insular area; insular cortex
limiting sulcus of Reil - Synonym(s): circular sulcus of Reil
Reil ansa - a complex fiber bundle. Synonym(s): ansa peduncularis
Reil band - Synonym(s): medial lemniscus; septomarginal trabecula
Reil ribbon - Synonym(s): medial lemniscus
Reil triangle - Synonym(s): lemniscal trigone

ansa

pl. ansae [L.] a looplike structure.

ansa axillaris
a loop between the musculocutaneous nerve and the median nerve.
ansa cardiaca
a loop of muscle that passes around the dorsal margin of the cardia and forms the margins of the reticular groove in ruminants. It is an essential part of the closing of the cardia.
ansa cervicalis
a nerve loop attached to the hypoglossal nerve and to the first two or three cervical spinal nerves.
ansa coli
the loops of the colon including the distal, proximal and spiral loops.
ansa distalis
a loop of the colon of ruminants that succeeds the spiral colon.
ansa of Henle
Henle's loop.
ansa hypoglossi
ansa cervicalis.
ansa lenticularis
a loop of nerve fibers that connects the globus pallidus with parts of the thalamus and midbrain.
ansa nervorum spinalium
loops of spinal nerves joining the ventral spinal nerves.
ansa peduncularis
a complex grouping of nerve fibers connecting the amygdaloid nucleus, piriform area, and anterior hypothalamus, and various thalamic nuclei.
ansa proximalis
a loop of the colon of ruminants that precedes the spiral colon.
ansa sigmoidea
the s-shaped curve of the proximal duodenum as it passes over the visceral surface of the liver of the horse, ruminants and pig.
ansa spiralis
the double loop of colon made up of centripetal and centrifugal coils and a central flexure that run in a vertical plane in ruminants and in a snail-like coil in pigs.
ansa subclavia
the loop made by the cervical sympathetic trunk as it divides to pass on either side of the subclavian artery at the thoracic inlet.