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Barney D., Canadian dermatologist, 1899–1978. See Senear-U. disease, Senear-U. syndrome. Charles Howard, English ophthalmologist, 1865–1942. See U. syndrome.
Usher syndrome
A genetic disorder characterized by hearing impairment and an eye disorder called retinitis pigmentosa in which vision worsens over time. Some people with Usher syndrome also ...
Abbreviation for United States Pharmacopeia. See Pharmacopeia.
Abbreviation for United States Public Health Service.
USPHS (United States Public Health Service)
The agency responsible for the public health of the American people. The Public Health Service (PHS) administers a number of critically important health agencies including the ...
Poisoning by Ustilago maydis (corn smut), which produces burning, itching, hyperemia, acrocyanosis, and edema of the extremities; resembles ergotism, pellagra, or infantile ...
A genus of smuts (order Ustilaginales). [L. a kind of thistle, fr. ustio, a burning] - U. maydis a smut species that resembles ergot of rye in its metabolic action; its black ...
1. Separation of compounds by heat, as in the process of freeing ores from sulfur by roasting. 2. Drying of a drug by heat to prepare it for pulverization. [L. ustulo, pp. -atus, ...
Assumption of pacemaker function of the heart by a subsidiary focus as a result of its own increased automaticity; e.g., accelerated junctional pacemaker takes command when it ...
A mild form of New World or American cutaneous leishmaniasis caused by Leishmania peruana, occurring in the high Andean valleys of Peru and Bolivia, and characterized by ...
See utero-.
Relating to the uterus.
Uterine contraction
The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1) they cause the cervix to thin and dilate (open); and (2) they help the ...
Uterine fibroid
: A benign tumor of the uterus (the womb) and the single most common indication for hysterectomy. Uterine fibroids can be present, but be inapparent. However, they are ...
Uterine fornix
The fornix of the uterus (known in medical Latin as the " fornix uteri") refers to the anterior (front) and posterior (back) recesses into which the upper vagina is divided. ...
Uterine lining
The inner layer of the uterus (womb); the cells that line the womb; anatomically termed the endometrium. This tissue is normally shed monthly in response to the hormonal ...
Uterine retroversion
A slight to dramatic placement of the uterus that orients it toward the back. A tipped uterus is common and usually causes no difficulty. In severe cases, it can affect choice of ...
Uterine rupture
A tear of the uterus, an uncommon but very serious situation that may result in hysterectomy, urologic injury, a need for blood transfusion, maternal death, and perinatal ...
Uterine tube
Also called the Fallopian tube. There are two Fallopian tubes, one on each side. They transport the egg from the ovary to the uterus (the womb). The Fallopian tubes have small ...
utero-, uter-
The uterus. SEE ALSO: hystero- (1), metr-. [L. uterus]
Relating to the uterus and an ovary.
Relating to the uterus and the abdomen. SYN: uteroventral.
Relating to the cervix of the uterus.
Formation of a communication between the uterus (cervix) and the bladder. [utero- + G. kystis, bladder, + stoma, mouth]
SYN: hysteropexy.
steroid-inducible, evolutionarily conserved, homodimeric secreted protein with many biological activities including a proinflammatory effect, inhibition of soluble ...
An α/β heterodimeric protein found in renal tubule cells, thought to regulate ion transport through channels in the actin cytoskeleton. A mutant allele has been found in some ...
SYN: uterine calculus. [utero- + G. lithos, stone]
SYN: hysterometer.
Relating to the uterus and the abdominal wall.
Relating to the uterus and the pelvis.
SYN: hysteropexy.
Relating to the uterus and the placenta.
Plastic surgery of the uterus. SYN: hysteroplasty, metroplasty. [utero- + G. plastos, formed]
Relating to the uterus and the sacrum.
SYN: hysterosalpingography.
SYN: hysteroscope.
SYN: hysteroscopy.
SYN: hysterotomy.
1. Giving tone to the uterine muscle. 2. An agent that overcomes relaxation of the muscular wall of the uterus. [utero- + G. tonos, tone, tension]
Causing an effect on the uterus.
Pertaining to the uterus and the uterine tubes.
SYN: hysterosalpingography.
Relating to the uterus and the vagina.
SYN: uteroabdominal. [utero- + L. venter, belly]
Biliverdin from dog placenta.
Relating to the uterus and the urinary bladder.
The uterus (womb) is a hollow, pear-shaped organ located in a woman's lower abdomen between the bladder and the rectum. The narrow, lower portion of the uterus is the cervix; the ...
Uterus, contraction of the
The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1) they cause the cervix to thin and dilate (open); and (2) they help the ...
Uterus, prolapsed
A uterus that has moved from its normal position in the abdominal cavity, usually into a lower position. Prolapsed uterus may occur because of underlying weak muscles, or simply ...
Uterus, tipped
A slight to dramatic placement of the uterus that orients it toward the back. A tipped uterus is common and usually causes no difficulty. In severe cases, it can affect choice of ...
Urinary tract infection. (Not to be confused with URI: upper respiratory infection). * * * Abbreviation for urinary tract infection.
In the analysis of health outcomes, utility is a number between 0 and 1 that is assigned to a state of health or an outcome. Perfect health has a value of 1. Death has a value of ...
Abbreviation for uridine 5′-triphosphate.
SYN: utriculus [TA], sacculus communis. - prostatic u. [TA] a minute pouch in the prostate that opens on the summit of the seminal colliculus, the analog of the uterus and ...
Relating to or resembling a utricle.
Plural of utriculus.
Inflammation of the internal ear. [ utriculus + G. -itis, inflammation]
Relating to the utricle and the saccule of the labyrinth, denoting especially a duct connecting the two structures.
SYN: utricle. SEE ALSO: vestibular labyrinth. [L. dim. of uter, leather bag] - u. prostaticus [TA] SYN: prostatic utricle.
Shaped like a leather bottle (wineskin). [L. uter, a skin bag, + forma, form]
UV, uv
Abbreviation for ultraviolet.
Abbreviation for ultraviolet A.
uva ursi
The dried leaves of Arctostaphylos uva-ursi (family Ericaceae), bearberry, mountain box, a common plant of the north temperate zone; contains antiseptic glycosides, arbutin, ...
SYN: vascular lamina of choroid. [L. uva, grape, + forma, form]
Abbreviation for ultraviolet B.
Part of the eye, the uvea collectively refers to the iris, the choroid of the eye, and the ciliary body: {{}}The iris: The circular, colored curtain of the eye that surrounds ...
Relating to the uvea.
Relating to the uvea.
Plural of uveitis.
Inflammation of the uvea, the part of the eye that collectively refers to the iris, the choroid of the eye, and the ciliary body: {{}}The iris: The circular, colored curtain of ...
SYN: Harada syndrome.
Inflammation of the sclera involved by extension from the uvea.
SYN: botryoid. [L. uva, grape, + forma, form]
Not weakened or destroyed by subjection to ultraviolet radiation. SYN: uvioresistant. [ uviol (ultraviolet), + fast]
A special kind of glass more than usually transparent to ultraviolet or actinic rays, e.g., crystalline quartz. [ultraviolet]
An instrument for measuring ultraviolet radiation. [ uviol (ultraviolet), + meter]
SYN: uviofast.
Sensitive to ultraviolet rays. [ uviol (ultraviolet) + sensitive]
uvitex 2B
A fluorescent stain that reacts with chitin; useful in the diagnosis of microsporidian or cryptosporidium infections.
A transmembrane protein that links plasma membranes of adjacent cells together in a Ca2+-dependent manner; aids in maintaining the rigidity of the cell layer. SYN: E-cadherin. ...
See uvulo-.
The small piece of soft tissue that can be seen dangling down from the soft palate over the back of the tongue. The uvula is described variously shaped like a U, a tear or a ...
SYN: uvuloptosis.
Relating to the uvula.
SYN: muscle of uvula.
SYN: uvulotome.
Excision of the uvula. SYN: staphylectomy. [ uvula + G. ektome, excision]
Inflammation of the uvula.
uvulo-, uvul-
The uvula. SEE ALSO: staphylo-. [L. uvula]
A type of operation designed to tighten up flabby tissues and enlarge the upper air passages. The operation involves reshaping the uvula (uvulo-), soft palate (-palato-) and ...
SYN: palatoplasty.
Relaxation or elongation of the uvula. SYN: falling palate, staphylodialysis, staphyloptosis, uvulaptosis. [uvulo- + G. ptosis, a falling]
An instrument for cutting the uvula. SYN: uvulatome.
Any cutting operation on the uvula. [uvulo- + G. tome, a cutting]
1. Abbreviation for vision or visual acuity; volt; with subscript 1, 2, 3, etc., the abbreviation for unipolar electrocardiogram leads. 2. Symbol for vanadium; valine; ...
1. Abbreviation for volt; initial rate velocity; velocity; vel [L. or]. 2. As a subscript, refers to venous blood. As a subscript, refers to mixed venous (pulmonary arterial) ...
V-shaped bends incorporated in an archwire, usually placed mesially or distally to the canines (cuspids) and used as a “dead” area of wire through which torquing bends may ...
See Vmax.
Abbreviation for Volpe- Manhold Index.
V-Y plasty
SYN: V-Y flap.
V. cholerae genome
The genome of the bacterium that causes cholera. This genome contains over 4 million bases in its DNA including the sequences for nearly 4,000 genes. The V. cholerae genome is ...
Symbol for alveolar ventilation. Abbreviation for ventriculoatrial.
Abbreviation for ventilation/perfusion ratio.
Abbreviation for ventriculoatrial conduction.
vaccenic acid
An unsaturated fatty acid of which both cis and trans isomers are found in butter and other animal fats.
SYN: vaccinia.
Relating to vaccine or vaccination.
To administer a vaccine.
Injection of a killed microbe in order to stimulate the immune system against the microbe, thereby preventing disease. Vaccinations, or immunizations, work by stimulating the ...
Vaccination, chickenpox (varicella)
This vaccine prevents the common disease known as chickenpox (varicella zoster). While chickenpox is often considered a trivial illness, it can cause significant lost time on ...
Vaccination, children’s
In the United States, it is recommended that all children receive vaccination against: - Hepatitis B - Diphtheria, tetanus, pertussis - Haemophilus influenzae type B (HIB) ...
Vaccination, DPT
DPT immunization protects from diphtheria, pertussis (whooping cough), and tetanus and is given in a series of 5 shots at 2, 4, 6, 18 months of age and 4-6 years of age. ...
Vaccination, DT
DT (diphtheria and tetanus) vaccine does not protect from pertussis and is usually reserved for individuals who have had a significant adverse reaction to a DPT shot or who ...
Vaccination, DTaP
Like DPT, DTaP protects from diphtheria, pertussis (whooping cough) and tetanus. DTaP is the same as DTP, except that it contains only acellular pertussis vaccine which is ...
Vaccination, H. flu
This immunization is designed to prevent disease due to Haemophilus influenzae (H. flu), specifically Haemophilus influenzae type B (HIB). The HIB bacteria is responsible for a ...
Vaccination, Haemophilus influenzae type B (HIB)
Immunization designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria responsible for a range of serious "invasive" diseases including meningitis ...
Vaccination, hepatitis A
1. When immediate protection against hepatitis A (infectious hepatitis) is needed, immunoglobulins are used. Protection is effective only if given within 2 weeks of exposure and ...
Vaccination, hepatitis B
Hepatitis B (hep B) vaccine gives prolonged protection, but 3 shots over a half year are usually required. All infants in the U.S. receive hep B vaccine. Two vaccines (Engerix-B, ...
Vaccination, HIB
This immunization is designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria responsible for a range of serious "invasive" diseases including ...
Vaccination, infectious hepatitis
See Vaccination, hepatitis A.
Vaccination, measles
See Vaccination, MMR. Vaccination, MMR: The standard vaccine given to prevent measles, mumps and rubella (German measles). The MMR vaccine is now given in two dosages. ...
Vaccination, mumps
See Vaccination, MMR. Vaccination, pneumococcal pneumonia: This vaccine, which prevents one of the most common and severe forms of pneumonia, is usually given only once in a ...
Vaccination, polio
The vaccines available for vaccination against polio are OPV (Oral Polio Vaccine) and IPV (Inactivated Polio Vaccine). OPV is still the preferred vaccine for most ...
Vaccination, serum hepatitis
Serum hepatitis is hepatitis B (hep B). Hep B vaccine gives prolonged protection, but 3 shots over a half year are usually required. All infants in the U.S. receive hep B vaccine. ...
Vaccination, Td
Td is the vaccine given to children over six and adults as boosters for immunity to diphtheria and tetanus.
Vaccination, varicella zoster
This immunization is aimed at preventing the common disease known as chickenpox (varicella zoster). While chickenpox is often considered a trivial illness, it can cause ...
Vaccination, yellow fever
A live attenuated (weakened) viral vaccine that is recommended for people traveling to or living in tropical areas in the Americas and Africa where yellow fever occurs. Because ...
1. A person who vaccinates. SYN: vaccinist. 2. A scarifier or other instrument used in vaccination.
Originally, the live v. ( vaccinia, cowpox) virus inoculated in the skin as prophylaxis against smallpox and obtained from the skin of calves inoculated with seed virus. Usage ...
Vaccine, flu
The flu (influenza) vaccine is recommended for persons at high risk for serious complications from influenza infection, including: Everyone age 65 or more; People with chronic ...
Vaccine, influenza
The influenza (flu) vaccine is recommended for persons at high risk for serious complications from influenza virus infection, including: Everyone age 65 or more; People with ...
Vaccine, meningococcal
A vaccine to prevent meningococcal meningitis, an inflammation of the membranes that cover the brain and spinal cord due to bacterial infection by an organism called Neisseria ...
Vaccine, rubella
A vaccine designed to prevent rubella, or German measles. German measles was once seen merely as a child's unpleasant rite of passage. It was thought to be a mild malady that ...
Vaccine, Sabin
The oral polio vaccine developed by Dr. Albert S. Sabin. The first vaccine against poliomyelitis was introduced by Dr. Jonas Salk in 1955 and was administered by injection ...
Vaccine, Salk
Vaccine against poliomyelitis named for Dr. Jonas Salk who developed and introduced it in 1955. It was the first type of polio vaccine to become available. It was made by ...
Microbial preparations of killed or modified microorganisms that can stimulate an immune response in the body to prevent future infection with similar microorganisms. These ...
An infection, primarily local and limited to the site of inoculation, induced in humans by inoculation with the v. virus, type species in the genus Orthopoxvirus (family ...
Relating to vaccinia.
Resembling vaccinia.
SYN: vaccinator (1).
Vaccination repeated at short intervals until it will no longer take.
A source of vaccine, such as an inoculated heifer.
Producing vaccine, or relating to the production of vaccine.
Resembling vaccinia.
A pointed instrument used in vaccination.
SYN: vaccine. [L.]
Relating to or resembling a vacuole.
vacuolate, vacuolated
Having vacuoles.
1. Formation of vacuoles. 2. The condition of having vacuoles. SYN: vacuolization.
1. A minute space in any tissue. 2. A clear space in the substance of a cell, sometimes degenerative in character, sometimes surrounding an englobed foreign body and serving as a ...
SYN: vacuolation.
A system of vacuoles that can be stained with neutral red in the living cell. [ vacuole + G. -oma, tumor]
An empty space, one practically exhausted of air or gas. [L. ntr. of vacuus, empty]
Ventricular assist device, a mechanical pump that takes over the function of the damaged ventricle of the heart and restores normal blood flow. Left ventricular assist devices ...
An occasional elevation from the bottom of a cerebral sulcus nearly obliterating it for a short distance. [L. a ford]
Relating to the vagus nerve.
Surgical removal of a segment of a vagus nerve.
Plural of vagus.
See vagino-.
: The muscular canal extending from the cervix to the outside of the body. It is usually six to seven inches in length, and its walls are lined with mucus membrane. It includes ...
Vagina, septate
A vagina that is divided, usually longitudinally, to create a double vagina. This situation can be easily missed by the patient and even by the doctor on exam. If the patient ...
Relating to the vagina or to any sheath. [Mod. L. vaginalis]
Vaginal contraceptive sponge
A contraceptive device that is donut-shaped, made of plastic, contains a spermicide (nonoxynol-9) and is inserted into the vagina to cover the cervix. A loop is provided to ease ...
Vaginal fornix
The fornix of the vagina (in medical Latin, the " fornix vaginae") refers to the anterior (front) and posterior (back) recesses into which the upper vagina is divided. These ...
Vaginal hysterectomy
Removal of the uterus through a surgical incision made within the vagina. With a vaginal hysterectomy, the scar is not outwardly visible. A vaginal hysterectomy is as opposed to ...
Vaginal introitus
The vaginal opening is called the introitus of the vagina. The Latin word " introitus" comes from "intro", into, within + "ire", to go = to go into. In anatomy, an introitus is ...
Vaginal membrane
A thin membrane which completely or partially occludes the vaginal opening. This fold of mucous membrane is usually present at birth at the orifice of the vagina. It is also ...
Vaginal opening
The opening to the muscular canal extending from the cervix to the outside of the body. The word "vagina" is a Latin word meaning "a sheath or scabbard", a scabbard into which one ...
Vaginal spermicide
A vaginal spermicide is a substance that will kill sperm in the vagina. Vaginal spermicides are available in foam, cream, jelly, film, suppository, or tablet forms. All ...
Vaginal vestibule
The vaginal opening is called the vestibule of the vagina. In medicine, a vestibule is a space or cavity at the entrance to a canal, channel, tube, vessel. In ancient Rome, the ...
SYN: vaginofixation.
1. To ensheathe; to enclose in a sheath. 2. Ensheathed; provided with a sheath.
Excision of the vagina or a segment thereof. SYN: colpectomy. [vagina + G. ektome, excision]
SYN: vaginismus.
Painful spasm of the vagina preventing intercourse. SYN: vaginism, vulvismus. [vagina + L. -ismus, action, condition] - posterior v. spasmodic stenosis of the vagina caused by ...
Inflammation of the vagina. The vagina is the muscular canal extending from the cervix to the outside of the body. Vaginitis is often caused by a fungus. A woman with this ...
Vaginitis, atrophic
Thinning of the lining (the endothelium) of the vagina due to decreased production of estrogen. This may occur with menopause. Vaginitis means inflammation of the vagina, the ...
vagino-, vagin-
The vagina. SEE ALSO: colpo-. [L. vagina, sheath]
Relating to the vagina and the abdomen.
SYN: colpocele (1).
Vaginal pain. SYN: colpodynia.
Suture of a relaxed and prolapsed vagina to the abdominal wall. SYN: colpopexy, vaginapexy, vaginopexy.
SYN: vaginal hysterectomy.
Relating to the vagina and the pudendal labia.
Vaginal infection due to a fungus. SYN: colpomycosis.
Any diseased condition of the vagina. [vagino- + G. pathos, suffering]
Relating to or involving the vagina and perineum.
Plastic surgery of the perineum involving the vagina. SYN: colpoperineoplasty. [vagino- + perineum, + G. plastos, formed]
Repair of a lacerated vagina and perineum. SYN: colpoperineorrhaphy. [vagino- + perineum, + G. rhaphe, suture]
SYN: episiotomy. [vagino- + perineum, + G. tome, incision]
Relating to the vagina and the peritoneum.
SYN: vaginofixation.
Plastic surgery of the vagina. SYN: colpoplasty. [vagino- + G. plastos, formed]
Inspection of the vagina, usually with an instrument.
Disease of the vagina. - bacterial v. infection of the human vagina that may be caused by anaerobic bacteria, especially by Mobiluncus species or by Gardnerella vaginalis. ...
SYN: colpotomy.
Relating to the vagina and the urinary bladder.
Relating to the vagina and the vulva.
Vaginulus plebeius
The slug vector of Angiostrongylus costaricensis.
vagitus uterinus
Crying of the fetus while still within the uterus, possible when the membranes have been ruptured and air has entered the uterine cavity. [L. fr. vagio, to squall; L. fr. uterus, ...
The vagus nerve. [L. vagus]
The vagus and the cranial root (accessory portion) of the accessory nerve, regarded as one nerve. See accessory nerve [CN XI].
Relating to the vagus and glossopharyngeal nerves; denoting their contiguous or common nuclei of origin and termination and regions innervated by both nerves such as the ...
Surgical destruction of the vagus nerve. [ vago- + G. lysis, a loosening]
1. Pertaining to or causing vagolysis. 2. A therapeutic or chemical agent that has inhibitory effects on the vagus nerve. 3. Denoting an agent having such effects.
Mimicking the action of the efferent fibers of the vagus nerve.
Division of the vagus nerve. [ vago- + G. tome, incision]
Archaic designation for a condition in which the parasympathetic autonomic system is reputedly overactive. SYN: parasympathotonia, sympathetic imbalance. [ vago- + G. tonos, ...
Relating to or marked by vagotonia.
Attracted by, hence acting upon, the vagus nerve. [ vago- + G. tropos, turning]
Pertaining to a process that utilizes both afferent and efferent vagal fibers.
SYN: v. nerve [CN X]. [L. wandering, so-called because of the wide distribution of the nerve]
Vagus nerve
A remarkable nerve that supplies nerve fibers to the pharynx (throat), larynx (voice box), trachea (windpipe), lungs, heart, esophagus, and the intestinal tract as far as the ...
Symbol for valine and valyl.
valence, valency
The combining power of one atom of an element (or a radical), that of the hydrogen atom being the unit of comparison, determined by the number of electrons in the outer shell of ...
Possessing valence.
Gabriel G., German-Swiss physiologist, 1810–1883. See V. corpuscles, under corpuscle, V. ganglion, V. nerve.
Ferdinand C., U.S. surgeon, 1851–1909. See V. position, V. test.
A class of iridoid alkaloids from Valeriana sp. and Kentranthus sp.; E.G., the drug valtratum is a member of this class.
A salt of valeric acid; some are used in modern medicine. SYN: valerianate.
1. The rhizome and roots of Valeriana officinalis (family Valerianaceae), a herb native in southern Europe and northern Asia, cultivated also in Great Britain and the U.S.; has ...
SYN: valerate.
valeric acid
Normal aliphatic acid; distilled from valerian; some of its salts are used in medicine; found in human colon. SYN: pentanoic acid.
valethamate bromide
An anticholinergic agent.
Someone with a weak or sickly constitution, especially someone whose chief concern is being or becoming a chronic invalid. The word "valetudinarian" comes from the Latin ...
A weak or infirm state due to invalidism.
Relating to valgus; knock-kneed; suffering from talipes valgus. [L. valgus, bowlegged, + G. eidos, resemblance]
Bent or twisted outward away from the midline or body; modern accepted usage, particularly in orthopedics, erroneously transposes the meaning of varus to v., as in genu valgum ...
Effective; producing the desired result; verifiably correct. [L. valeo, to be strong]
The act or process of making valid. - consensual v. the confirmation of the experience or judgment of one person by another.
An index of how well a test or procedure in fact measures what it purports to measure; an objective index by which to describe how valid a test or procedure is. - concurrent v. ...
2-Amino-3-methylbutanoic acid; the l-isomer is a constituent of most proteins; a nutritionally essential amino acid.
Cyclododecadepsipeptides ionophore antibiotic derived from Streptomyces fulvissius; a 36-membered ring structure consisting of 3 mol each of l-valine, d-α-hydroxyisovaleric ...
Plural of vallum.
Bordered with an elevation, as a cupped structure; denoting especially certain lingual papillae. SEE ALSO: circumvallate. [L. vallo, pp. -atus, to surround with, fr. vallum, a ...
An anatomic term for a crevice, furrow or depression. There are a variety of valleculae including one in the brain, another in the nail matrix, etc. However, used alone, the ...
François L. I., French physician, 1807–1855. See V. points, under point.
SYN: vallecula.
An antianxiety agent. SYN: valmethamide.
SYN: equivalent extract. [L. valeo, to be strong]
valproic acid
An anticonvulsant used to treat seizure disorders; also used as the sodium salt, valproate sodium.
Antonio M., Italian anatomist, 1666–1723. See aneurysm of sinus of V., V. antrum, V. ligaments, under ligament, V. maneuver, V. muscle, V. sinus, teniae of V., under tenia, ...
Valsalva maneuver
A maneuver in which a person tries to exhale forcibly with a closed glottis (the windpipe) so that no air exits through the mouth or nose as, for example, in strenuous ...
A particular quantitative determination. For values not given below, see the specific name. SEE ALSO: index, number. [M.E., fr. O.Fr., fr. L. valeo, to be of v.] - acetyl v. the ...
Value, Daily (DV)
A new term appearing on food labels, Daily Value is a new dietary reference value designed to help consumers use food label information to plan a healthy diet. Daily Values (DVs) ...
SYN: valve. [L. one leaf of a double door] - v. aortae [TA] SYN: aortic valve. - v. atrioventricularis dextra [TA] SYN: tricuspid valve. - v. atrioventricularis sinistra [TA] ...
valval, valvar
Relating to a valve.
Relating to or provided with a valve. SYN: valvular.
1. A fold of the lining membrane of a canal or other hollow organ serving to retard or prevent a reflux of fluid. 2. Any formation or reduplication of tissue, or flaplike ...
Valve, aortic
One of the four valves in the heart, this valve is situated at exit of the left ventricle of the heart where the aorta (the largest of all arteries) begins. The aortic valve lets ...
Valve, bicuspid
One of the four valves of the heart, this one is situated between the left atrium and the left ventricle. It permits blood to flow one way only, from the atrium into the ...
Valve, mitral
One of the four valves of the heart, the mitral valve is situated between the left atrium and the left ventricle. It permits blood to flow one way: from the left atrium into the ...
Valve, pulmonary
One of the four valves in the heart, the pulmonary valve stands at the opening from the right ventricle in the pulmonary artery trunk. It lets blood head in the right direction ...
Valve, tricuspid
One of the four heart valves, the tricuspid valve is the first one that blood encounters as it enters the heart. The tricuspid valve is situated between the right atrium and ...
Without valves; denoting certain veins, such as the portal, that are not provided with valves as are most of the veins.
Valves, heart
There are four heart valves. All are one-way valves. Blood entering the heart first passes through the tricuspid valve and then the pulmonary valve. After returning from the ...
Surgical reconstruction of a deformed cardiac valve, for the relief of stenosis or incompetence. SYN: valvuloplasty. [valve + G. plastos, formed]
1. Cutting through a stenosed cardiac valve to relieve the obstruction. SYN: valvulotomy. 2. Incision of a valvular structure. [valve + G. tome, incision] - mitral v. ...
SYN: valvule. [Mod. L. dim. of valva] - Amussat v. SYN: posterior urethral valves, under valve. - valvulae anales [TA] SYN: anal valves, under valve. - v. bicuspidalis SYN: ...
SYN: valvate.
A valve, especially one of small size. SYN: valvula [TA]. [L. valvula] - Foltz v. SYN: Bochdalek valve. - lymphatic v. [TA] one of the delicate semilunar valves found in ...
Inflammation of a valve, especially a heart valve. [Mod. L. valvula, valve, + G. -itis, inflammation] - rheumatic v. v. characterized in the acute stage by small fibrin ...
SYN: valvoplasty.

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