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Medical condition
A vascular ring is a congenital defect in which there is an abnormal formation of the aorta and/or its surrounding blood vessels. The trachea and esophagus
Vascular_ring
Main growth tissue in the stems, roots of plants
herbaceous plants, it occurs in the vascular bundles which are often arranged like beads on a necklace forming an interrupted ring inside the stem. In woody plants
Vascular_cambium
Medical condition
anomaly of the aortic arch in which two aortic arches form a complete vascular ring that can compress the trachea and/or esophagus. Most commonly there
Double_aortic_arch
Sexual device
simple mechanical and hydrodynamical action in spite of vascular or nerve damage, and the ring is slid off the pump's cylinder onto the base of the penis
Cock_ring
Medical condition
symptoms. However, when it is accompanied by other vascular abnormalities, it may form a vascular ring, causing symptoms due to compression of the trachea
Right-sided_aortic_arch
Medical condition
in the cartilaginous rings. Secondary bronchomalacia may occur by extrinsic compression from an enlarged vessel, a vascular ring or a bronchogenic cyst
Bronchomalacia
Artery of the mediastinum
culminating in death. Aberrant innominate artery can cause incomplete vascular ring. It does not completely encircle the trachea and esophagus, but some
Brachiocephalic_artery
Medical condition
behind the esophagus. Such course of this aberrant vessel may cause a vascular ring around the trachea and esophagus. Dysphagia due to an aberrant right
Aberrant_subclavian_artery
Medical condition
left lung. This anomaly is classified as a type of vascular ring, though it does not form a complete ring around the airway and esophagus. Pulmonary artery
Pulmonary_artery_sling
Healthcare professional who uses the cardiopulmonary bypass machine
repair/replacement, Aortic valve disorders, Anomalous/single Coronary artery, Vascular ring, Extracorporeal membrane oxygenation (ECMO) Adult surgical procedures
Perfusionist
Tracheal disease
or esophageal atresia Type 2—extrinsic compression sometimes due to vascular rings Type 3—acquired due to chronic infection or prolonged intubation or
Tracheomalacia
Hydraulic system in echinoderm anatomy
water pressure is maintained by the ring canal, which is surrounded by contractile muscle fibres. The water vascular system of sea cucumbers has no connection
Water_vascular_system
High-pitched breathing sound due to obstruction of the larynx
GERD, or complication of anesthesia); subglottic hemangioma (rare); vascular rings compressing the trachea; thyroiditis such as Riedel's thyroiditis; vocal
Stridor
Vascular structures in the embryo
abnormal right aortic arch in addition to the left aortic arch, forming a vascular ring around the trachea and esophagus, which usually causes difficulty breathing
Aortic_arches
Species of bacterium
only potatoes. It causes a disease in potatoes known as 'ring rot' due to the way it rots vascular tissue inside potato tubers It is present in parts of
Clavibacter_sepedonicus
Narrowing of the lower esophagus due to mucosal or muscular tissue
ring or Schatzki–Gary ring is a narrowing of the lower esophagus that can cause difficulty swallowing (dysphagia). The narrowing is caused by a ring of
Schatzki_ring
Central part of a root or stem
In a vascular plant, the stele (also called vascular stele or vascular cylinder) is the central part of the root or stem containing the tissues derived
Stele_(biology)
Blood vessel or lymph vessel abnormality
A vascular malformation is a type of vascular anomaly. They may cause aesthetic problems as they have a growth cycle, and can continue to grow throughout
Vascular_malformation
Medical condition
Shepherd DR, Gibbons JR (1990). "Tracheal stenosis caused by congenital vascular ring anomaly misinterpreted as asthma for 45 years". Thorac Cardiovasc Surg
Laryngotracheal_stenosis
Injury to one or both recurrent laryngeal nerves
anatomical abnormalities such as a tracheoesophageal fistula, vascular anomalies (e.g. vascular ring) affecting the vocal mechanism, syndromes affecting brainstem
Vocal_cord_paresis
American surgeon (born 1958)
applications in 1993, subsequently performing the world's first endoscopic vascular ring division, diaphragm plication, and thoracic duct ligation. Burke became
Redmond_Burke
Disease bacteria of tomato family, others
eventually fail to recover and die. Brown staining of vascular ring happens and pus may exude from the ring when the tuber is squeezed. Pale ooze may exude
Ralstonia_solanacearum
Method of dating based on the analysis of patterns of tree rings
growth rings, also referred to as tree rings or annual rings. Growth rings result from new growth in the vascular cambium, a layer of cells near the bark
Dendrochronology
Inflammation of the small airways in the lungs
Foreign body aspiration Congenital heart disease Allergic reaction Vascular ring Heart failure Cystic fibrosis Chronic pulmonary disease Prevention of
Bronchiolitis
Cellular structures found in some woods
Medullary rays, also known as vascular rays or pith rays, are cellular structures found in some species of wood. They appear as radial planar structures
Medullary_ray_(botany)
Species of roundworm
nematode is present in the outermost layer of the tuber, including the vascular ring, and is surrounded by 3–6 large giant cells (Vovlas 2005). In addition
Meloidogyne_javanica
Layer of parenchyma or sclerenchyma cells
around the ring of vascular bundles in the stele. In dicot roots, the pericycle strengthens the roots and provides protection for the vascular bundles.[citation
Pericycle
Ring of fibrous tissue around optic nerve at its entrance to the eye
vascular structure known as the circle of Zinn-Haller, or sometimes as the circle of Zinn. The following structures pass through the tendinous ring (superior
Common_tendinous_ring
Penis piercing
Depending on the placement it may be a surface piercing, but due to both the vascular, fast healing nature of the penis, and loose nature of the skin in that
Frenum_piercing
Medical condition
compressed from vascular structures, such as vascular rings, lymphadenopathy, or tumors. Airway edema may cause wheezing in CHF. In addition, vascular compression
Acute_severe_asthma
Pattern seen in radiologic examinations
Ring-enhancing lesion is a radiographic finding defined as an abnormal lesion with central hypodensity (computed tomography) or hypointensity (magnetic
Ring-enhancing_lesion
Surgical technique
blood vessels or bowel. For example, an arterial anastomosis is used in vascular bypass and a colonic anastomosis is used to restore colonic continuity
Surgical_anastomosis
Water transport tissue in vascular plants
the two types of transport tissue in vascular plants, the other being phloem; both of these are part of the vascular bundle. The basic function of the xylem
Xylem
Part of a plant
Cork cambium (pl.: cambia or cambiums) is a tissue found in many vascular plants as a part of the periderm. It is one of the many layers of bark. It exists
Cork_cambium
Protrusion of abdominal contents through the inguinal canal in the pelvis
obstructive pulmonary disease, obesity, pregnancy, peritoneal dialysis, collagen vascular disease, and previous open appendectomy, among others. Predisposition to
Inguinal_hernia
Inflammatory disease involving a buildup of lesions in the walls of arteries
role of DNA damage in vascular aging. 8-oxoG, a common type of oxidative damage in DNA, is found to accumulate in plaque vascular smooth muscle cells,
Atherosclerosis
Class of compounds
EXD4, EXE5) are newly described. They stimulate vascular permeability in an ex vivo human vascular endothelial model system, and in a small study of
Eicosanoid
Structural axis of a vascular plant
A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved
Plant_stem
Allergic inflammatory condition of the esophagus
esophagus"). Endoscopically, ridges, furrows, or rings may be seen in the esophageal wall. Sometimes, multiple rings may occur in the esophagus, leading to the
Eosinophilic_esophagitis
Death of a region of brain cells due to poor blood flow
hemorrhagic stroke results from the rupture of a blood vessel or an abnormal vascular structure. About 87% of strokes are ischemic, with the rest being hemorrhagic
Stroke
Medical condition
Kayser–Fleischer rings (KF rings) are dark rings that appear to encircle the cornea of the eye. They are due to copper deposition in the Descemet's membrane
Kayser–Fleischer_ring
Component of Xylem
A tracheid is a long and tapered lignified cell in the xylem of vascular plants. It is a type of conductive cell called a tracheary element. Angiosperms
Tracheid
Sugar transport tissue in vascular plants
Phloem (/ˈfloʊ.əm/, FLOH-əm) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known
Phloem
Biomedical imaging technology
septal defect, connective tissue diseases such as Marfan syndrome, vascular rings, abnormal origins of the coronary arteries, and cardiac tumors. Atrial
Cardiac magnetic resonance imaging
Cardiac_magnetic_resonance_imaging
Removal of the bark from around the entire circumference
cultivation), the technique is also called "cincturing". Like all vascular plants, trees use two vascular tissues for transportation of water and nutrients: the
Girdling
Opening used to filter water in echinoderms
a light colored calcareous opening used to filter water into the water vascular system of echinoderms. It acts like a pressure-equalizing valve. It is
Madreporite
Division of typically non-vascular land plants
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (/braɪˈɒfətə/, /ˌbraɪ.əˈfaɪtə/) sensu stricto. Bryophyta sensu lato
Moss
Chemical compound
a gel to wounds in rats. In addition, this topical gel also increased Vascular Endothelial Growth Factor (VEGF), which has been implicated in hair growth
Deoxyribose
Physiological phenomenon involving the hardening and enlargement of the penis
erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal, sexual
Erection
Pharmaceutical company
a developer, manufacturer, and marketer of medical technologies in the vascular medicine, urology, oncology, and surgical specialty fields. C. R. Bard
Bard_(company)
of resulting disruption, allowing judgment on the stability of the pelvic ring and prediction of associated blood loss. Tile classification Burgess AR,
Young–Burgess_classification
Plant that has no persistent woody stem above ground
Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly
Herbaceous_plant
Type of medical device
coronary angioplasty, with drug-eluting stents being the most common type. Vascular stents are used for peripheral and cerebrovascular disease, while ureteral
Stent
Medical condition
transverse amputation that cuts off the vascular supply to the developing extremity, the actual constriction ring is not seen. This can result in different
Constriction_ring_syndrome
Medical condition
Ring chromosome 14 syndrome is a very rare human chromosome abnormality. It occurs when one or both of the telomeres that mark the ends of chromosome 14
Ring_chromosome_14_syndrome
Form of sexual dysfunction in males
risk factors and predictive factors. These factors can be categorized as vascular, neurological, local penile, hormonal, and drug-induced. Notable predictors
Erectile_dysfunction
X chromosome monosomy
associations with obesity. Hepatic vascular diseases are also seen in the syndrome as an aspect of Turner syndrome's broader vascular, aortic and cardiac impacts
Turner_syndrome
Second stage of larval development in starfishes
form the water vascular system, while the other remains as the adult body cavity. Once the tube feet develop from the water vascular system, the larva
Brachiolaria
Country primarily in North America
countries containing large numbers of endemic species: about 17,000 species of vascular plants occur in the contiguous United States and Alaska, and over 1,800
United_States
Retractable fold of skin which covers and protects the glans of the penis
The inner foreskin is attached to the glans by the frenulum, a highly vascularized tissue of the penis. The World Health Organization states that "the frenulum
Foreskin
Medical device for restricting blood flow
devices. More recently the silicone ring tourniquet has been used in the fields of emergency medicine and vascular procedures. However, in 2015 Feldman
Tourniquet
Vision loss due to damage to the macula of the eye
cure or treatment restores the vision already lost. In the wet form, anti–vascular endothelial growth factor injected into the eye or, less commonly, laser
Macular_degeneration
Fibrous material from trees or other plants
is known as secondary growth; it is the result of cell division in the vascular cambium, a lateral meristem, and subsequent expansion of the new cells
Wood
Narrowing of the carotid arteries
screening is not advised, the American Heart Association and the Society for Vascular Surgery recommend screening in those diagnosed with related medical conditions
Carotid_artery_stenosis
Eye muscle which is used for focusing
intrinsic muscle of the eye formed as a ring of smooth muscle in the eye's middle layer, the uvea (vascular layer). It controls accommodation for viewing
Ciliary_muscle
Chemical compound
bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered pyrrole ring. Indoles are derivatives of indole where one or more of
Indole
False perception of sound
Tinnitus is a condition when a person hears a ringing sound or a different variety of sounds when no corresponding external sound is present and that
Tinnitus
Family of sea cucumbers
tubules. They also lack radial canals of the water-vascular system, with only the circumoral ring present. Synaptids have elongated bodies, and their
Synaptidae
Extinct genus of vascular plants
(déndron), meaning "tree", is an extinct genus of primitive lycopodian vascular plants belonging to the order Lepidodendrales (also called "arborescent
Lepidodendron
Abnormal exit of tissues or organs from the cavity they usually reside in
obstructive pulmonary disease, obesity, pregnancy, peritoneal dialysis, collagen vascular disease, and previous open appendectomy, among others. Predisposition to
Hernia
Bacterial disease in beet plants
Beet vascular necrosis and rot is a soft rot disease caused by the bacterium Pectobacterium carotovorum subsp. betavasculorum, which has also been known
Beet_vascular_necrosis
Deposits within the eye's vitreous humour
sometimes makes a large floater appear, usually in the shape of a ring ("Weiss ring"). Posterior vitreous detachment is more common in people who: are
Floater
herbs have a growth zone called vascular cambium between the root bark and the root xylem. The vascular cambium ring is active during growing season and
Herbchronology
Chemical compound
It is ambimobile, being transported both upwards and downwards through vascular bundles. In plants, it is hydrolyzed to the enol form by cleavage of the
Spirotetramat
Human male external reproductive organ
mechanisms are poorly understood but involve complex neurological and vascular factors. Potential complications include ischaemia, thrombosis, and impotence
Human_penis
Natural lubrication of the vagina during sexual arousal
on other methods of lubrication. Plasma from the vaginal walls due to vascular engorgement is considered to be the chief lubrication source, and the Bartholin's
Vaginal_lubrication
Bulge in the wall of a blood vessel
individuals under 40 years of age are a major diagnostic criteria of the vascular form of Ehlers–Danlos syndrome (vEDS). Specific infective causes associated
Aneurysm
Marine phylum of animals often with radial symmetries
defensive mechanism when attacked. Echinoderms possess a unique water vascular system, a network of fluid-filled canals modified from the coelom (body
Echinoderm
Medullosa stellata, interpreted as indicative of presence of a complex vascular system, as well as indicating that members of Medullosales differed in
2026_in_paleobotany
Medical treatment
arterial issues as well as in rehabilitation (after sports injuries and vascular complaints). With the aid of normal and low pressure, it should enable
Intermittent_vacuum_therapy
Group of eye diseases related to poor retinal and nerve perfusion
increase the pressure inside the eye. This elevated pressure can reduce vascular perfusion in the vitreous chamber and can damage the optic nerve and peripheral
Glaucoma
Protein complex involved in cilium biogenesis
Bbs1 gene on vascular function, blood pressure, and arterial stiffening. The results showed heightened contractility of the vascular rings and an increase
BBSome
Species of plant
While its stem develops growth ring-like zones, these do not reliably indicate age since they form from irregular vascular bundle patterns rather than seasonal
Dracaena_cinnabari
Difference in coloration, usually of the iris but also of hair or skin
different color from its remainder. In central heterochromia, there is a ring around the pupil or possibly spikes of different colors radiating from the
Heterochromia
Class of echinoderms, marine animal
specialised structures such as the madreporite (the entrance to the water vascular system), pedicellariae, and paxillae. Paxillae are umbrella-like structures
Starfish
Country in Eastern Europe and North Asia
largest area of forest. Russian biodiversity includes 12,500 species of vascular plants, 2,200 species of bryophytes, about 3,000 species of lichens, 7
Russia
and S&P SmallCap 600" (PDF). March 6, 2026. Retrieved March 18, 2026. "RingCentral Set to Join S&P SmallCap 600" (PDF). February 9, 2026. Retrieved February
List_of_S&P_600_companies
Chemical compound
Members of the combretastatin family possess varying ability to cause vascular disruption in tumors. Combretastatin binds to the β-subunit of tubulin
Combretastatin
Effects of pollution on the brain
particularly linked to vascular dementia with a "well-recognized link between PM2.5 and vascular injury and the role of vascular injury in dementia". Lewy
Brain_health_and_pollution
Class of echinoderms
well as open sinuses. A central haemal ring surrounds the pharynx next to the ring canal of the water vascular system, and sends off additional vessels
Sea_cucumber
Group of seed plants
Conifers (/ˈkɒnɪfər/) are a group of vascular plants and a subset of gymnosperms. They are woody trees and shrubs, mostly evergreen with a regular branching
Conifer
Medical procedure
affected by trauma, arthritis, cancers such as high-grade bone sarcomas, and vascular conditions such as diabetic foot ulcers. As the techniques in chemotherapy
Limb-sparing_techniques
Medication against high blood pressure
arteries as a result of its acting directly on vascular smooth muscle, causing a reduction in peripheral vascular resistance and a consequent reduction in blood
Amlodipine
Eyes not aligning when looking at something
opacity Corneal neovascularization Kayser–Fleischer ring Haab's striae Arcus senilis Band keratopathy Vascular tunic Iris Ciliary body Uveitis Intermediate uveitis
Strabismus
Plant fungal disease
the vascular system is a characteristic symptom. Vascular discoloration, ring shaped brown coloration of the phloem, is visible as the vascular system
Vascular_wilt_in_lulo
Index of plants with the same common name
cortex and the stele. Inside the vascular cylinder, xylem and phloem are arranged in the ring, with multiple vascular bundles alternating around the circumference
Yellow_foxtail
Plant tissue
Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which in some cases can store starch
Pith
Stanley L. (February 2024). "A terminal metabolite of niacin promotes vascular inflammation and contributes to cardiovascular disease risk". Nature Medicine
2024_in_science
Failure of the brain to process input from one eye
opacity Corneal neovascularization Kayser–Fleischer ring Haab's striae Arcus senilis Band keratopathy Vascular tunic Iris Ciliary body Uveitis Intermediate uveitis
Amblyopia
Hopkins, 88, English architect (Portcullis House), complications from vascular dementia. James R. Hurley, 91, American politician, member of the New Jersey
Deaths_in_June_2023
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