ansa

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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

, gen. and pl.

an·sae

(an'să, -sē), [TA]
Any anatomic structure in the form of a loop or arc.
See also: loop.
[L. loop, handle]

ansa

/an·sa/ (an´sah) pl. an´sae   [L.] a looplike structure.
ansa cervica´lis  a nerve loop in the neck that supplies the infrahyoid muscles.
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  loop of Henle.
an´sae nervo´rum spina´lium  loops of nerve fibers joining the ventral roots of the 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.
ansa subcla´via , ansa of Vieussens the subclavian loop; nerve filaments passing around the subclavian artery to form a loop connecting the middle and inferior cervical ganglia.
ansa vitelli´na  an embryonic vein from the yolk sac to the umbilical vein.

ansa

[an′sə,] pl. ansae
Etymology: L, handle
(in anatomy) a looplike structure resembling a curved handle of a vase.

an·sa

, pl. ansae (an'să, -sē) [TA]
Any anatomic structure in the form of a loop or an arc.
See also: loop
[L. loop, handle]

ansa

An anatomical structure, especially neurological, in the form of a loop or arc. From the Latin ansa , the handle of a jug.

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.