stria

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stria

 [stri´ah] (pl. stri´ae) (L.)
1. a band, line, streak, or stripe.
2. in anatomic nomenclature, a longitudinal collection of nerve fibers in the brain.
atrophic striae (stri´ae atro´phicae) atrophic, pinkish or purplish, scarlike lesions, later becoming white (lineae albicantes), on the breasts, thighs, abdomen, and buttocks, due to weakening of elastic tissues, associated with pregnancy (striae gravidarum), overweight, rapid growth during puberty and adolescence, Cushing's syndrome, and topical or prolonged treatment with corticosteroids.
stria diagona´lis (Broca) a band of nerve fibers that forms the caudal zone of the anterior perforated substance where it adjoins the optic tract.
stri´ae gravida´rum striae atrophicae occurring in pregnancy.
Striae gravidarum: linear tears that may occur in the connective tissue. From Gorrie et al., 1994.
stri´ae medulla´res bundles of white fibers across the floor of the fourth ventricle.

stri·a

, gen. and pl.

stri·ae

(strī'ă, strī'ē), [TA]
1. A stripe, band, streak, or line, distinguished by color, texture, depression, or elevation from the tissue in which it is found. Synonym(s): striation (1)
2. Synonym(s): striae cutis distensae
[L. channel, furrow]

stria

(stri´ah) pl. stri´ae   [L.]
1. a band, line, streak, or stripe.
2. in anatomy, a longitudinal collection of nerve fibers in the brain.

stri´ae atro´phicae , stri´ae disten´sae atrophic, pinkish or purplish, scarlike lesions, later becoming white, on the breasts, thighs, abdomen, and buttocks, due to weakening of elastic tissues, associated with pregnancy (striae gravidarum), overweight, rapid growth during puberty and adolescence, Cushing's syndrome, and topical or prolonged treatment with corticosteroids.
stri´ae gravida´rum  see striae atrophicae.

stria

(strī′ə)
n. pl. striae (strī′ē)
1. A thin, narrow groove or channel.
2. A thin line or band, especially one of several that are parallel or close together: a characteristic stria of contractile tissue.

stria

[strī′ə] pl. striae
Etymology: L, furrow
a streak or a linear scar that often results from rapidly developing tension in the skin, such as seen on the abdomen after pregnancy. Purplish striae are among the classic findings in hyperadrenocorticism. Also called stretch mark.

stri·a

, pl. striae (strī'ă, -ē) [TA]
1. A stripe, band, streak, or line, distinguished by color, texture, depression, or elevation from the tissue in which it is found.
Synonym(s): striation (1) .
2. Synonym(s): striae cutis distensae.
[L. channel, furrow]

stria

(stri'a) (stri'e) plural.striae [L., stria, furrow]
A line, stripe, ridge, or thin band that is visible because it contrasts with the surrounding tissue. It may be elevated or of a different color or texture. See: streak

striae acusticae

Horizontal white stripes on the floor of the fourth ventricle of the brain.
Enlarge picture
STRIA ATROPHICA: Abdomen of a gravid woman at term

stria atrophica

A fine pinkish-white or gray line, usually 14 cm long, seen in parts of the body where skin has been stretched. It is commonly seen on thighs, abdomen, and breasts of women who are or have been pregnant; in those whose skin has been stretched by obesity, tumor, or edema; or in people who have taken adrenocortical hormones for a prolonged period. Synonym: stretch mark; stria gravidarum See: illustration

striae gravidarum

Stria atrophica.

stria longitudinalis lateralis

Any of the longitudinal bands of gray matter, slightly elevated on the upper part of the corpus callosum.

stria medullaris

A thin axon tract that originates in the septal nuclei, the hypothalamus, and the anterior thalamic nucleus and synapses in the habenular nuclei of the epithalamus. It is part of the limbic system.
Synonym: stria medullaris thalami See: limbic system for illus

stria medullaris thalami

Stria medullaris.

olfactory stria

Any of three bands of fibers (lateral, intermediate, and medial) that form the roots of the olfactory tract. As it reaches the olfactory areas of the cortex on the undersurface of the brain, the olfactory tract splits into two visible ridges, a large lateral and a small medial stria.

stria of Retzius

See: Retzius, Magnus Gustaf

stria terminalis

An axon tract that originates in the amygdala and synapses in the hypothalamus. It is a slender, compact tract that curves over the thalamus, arching along the medial surface of the caudate nucleus (below the fornix), and terminates in the anterior hypothalamus. It is part of the limbic system.
See: limbic system for illus

stria

a line or groove.

stria 

1. Slight dark ridges in the pars plana of the ciliary body, which run parallel with each other from the teeth of the ora serrata to the valleys between the ciliary processes. Syn. striae ciliares.
2. A line in the posterior corneal stroma associated with corneal oedema and sometimes keratoconus.
3. A vein or streak seen in optical glass which has been contaminated during manufacture or in which the ingredients have been imperfectly mixed. See ciliary body; glass; oedema.

stri·a

, pl. striae (strī'ă, -ē) [TA]
Stripe, band, streak, or line, distinguished by color, texture, depression, or elevation from tissue in which it is found.
[L. channel, furrow]

stria

pl. striae [L.]
1. a streak or line.
2. a narrow, bandlike structure; longitudinal collections of nerve fibers in the brain.

atrophic stria, striae atrophicae
atrophic, pinkish or purplish, scarlike lesions in the skin, later becoming white, due to weakening of elastic tissues. Seen in association with canine Cushing's syndrome.
habenular stria
a bundle of nerve fibers connecting the olfactory centers with the habenular nuclei.
stria mallearis
a light band visible through the tympanic membrane when it is examined with an otoscope; is the handle of the malleolus.
stria medullares
bundles of white fibers across the floor of the fourth ventricle.