valve (valv) a membranous fold in a canal or passage that prevents backward flow of material passing through it. 
Tricuspid valve
tricuspid valve, 
tricuspid valve (trī·kusˑ·pid valvˑ),
)
Valves of the heart.
aortic valve that guarding the entrance to the aorta from the left ventricle.
artificial cardiac valve a substitute, mechanical or composed of tissue, for a cardiac valve.
atrioventricular valves the valves between the right atrium and right ventricle (tricuspid v. ) and the left atrium and left ventricle (mitral v. ).
Béraud's valve a fold of mucous membrane sometimes occurring at the beginning of the nasolacrimal duct.
bicuspid valve mitral v.
bileaflet valve a heart valve prosthesis consisting of a circular sewing ring to which are attached two semicircular occluding disks that swing open and closed to regulate blood flow.
bioprosthetic valve an artificial cardiac valve composed of biological tissue, usually porcine.
caged-ball valve a heart valve prosthesis comprising a sewing ring attached to a cage composed of curved struts that contains a free-floating ball.
cardiac valves those controlling the flow of blood through and from the heart.
coronary valve that at the entrance of the coronary sinus into the right atrium.
flail mitral valve a cardiac valve having a cusp that has lost its normal support (as in ruptured chordae tendineae) and flutters in the blood stream.
Houston's valves permanent transverse folds, usually numbering three, in the rectum.
ileocecal valve , ileocolic valve that guarding the opening between the ileum and cecum.
mitral valve that between the left atrium and left ventricle, usually having two cusps (anterior and posterior).
pulmonary valve that at the entrance of the pulmonary trunk from the right ventricle.
pyloric valve a prominent fold of mucous membrane at the pyloric orifice of the stomach.
semilunar valve one having semilunar cusps, i.e., the aortic and pulmonary valves; sometimes used to designate the semilunar cusps composing these valves.
thebesian valve coronary v.
tilting-disk valve a heart valve prosthesis consisting of a sewing ring and a valve housing containing a suspended disk that swings between open and closed positions.
tricuspid valve that guarding the opening between the right atrium and right ventricle.
ureteral valve a congenital transverse fold across the lumen of the ureter, composed of redundant mucosa made prominent by circular muscle fibers; it usually disappears in time but may rarely cause urinary obstruction.
| tricuspid valve n. The three-segmented valve of the heart that keeps blood in the right ventricle from flowing back into the right atrium. Also called right atrioventricular valve. |
Tricuspid valve
A fold in between the right atrium and the right ventricle of the heart that directs blood that needs oxygen to the lungs.
tricuspid valve,
a valve with three main cusps situated between the right atrium and right ventricle of the heart. The cusps of the tricuspid valve include the ventral, dorsal, and medial cusps. The cusps are composed of strong fibrous tissue and are anchored to the papillary muscles of the right ventricle by several tendons. As the right and left ventricles relax during the diastolic phase of the heartbeat, the tricuspid valve opens, allowing blood to flow into the ventricle. In the systolic phase of the heartbeat, both blood-filled ventricles contract, pumping out their contents, while the tricuspid and mitral valves close to prevent any backflow. Also called right atrioventricular valve. Compare aortic valve, mitral valve, pulmonary valve, semilunar valve. See also atrioventricular valve, heart valve.
)
Tricuspid valve
tricuspid valve (trī·kusˑ·pid valvˑ),
n a heart valve with three primary flaps; positioned between the right ventricle and right atrium of the heart, comprises strong fibrous tissue. It allows blood to flow from the atrium into the ventricle and tightly closes to prevent the reverse flow of the blood when the ventricle contracts. Also called
right atrioventricular valve.
right atrioventricular valve.
)
Tricuspid valve.
tricuspid
having three points or cusps, as a valve of the heart.
tricuspid dysplasia
a congenital defect of the tricuspid heart valve commonest in cats. There is a variety of forms of the defect which causes enlargement of the right atrium and ventricle. See also ebstein's anomaly.
tricuspid insufficiency
a functional incompetence that may be caused by rupture of the chordae tendineae of the tricuspid valve, bacterial endocarditis, heartworms, endocardiosis or congenital anomalies, resulting in regurgitation of blood from the right ventricle into the right atrium during systole.
tricuspid regurgitation
see tricuspid insufficiency (above).
tricuspid valve
the valve located between the right atrium and right ventricle. Called also right atrioventricular valve.
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