ChordaeRuptureMitral valveAcutePosteromedialSystoleTrabeculaeHypertrophyMyocardial infarctionContractilityVentricularChambers of the heartOriginateContractionVentriclesPreparationsMyocardiumDisordersVesselsCharacteristicsCoronaryCardiac muscle cellsSkeletalPatientsAxisMechanicalHeart muscleMassElectrical
Chordae10
- The anterior, posterior, and septal papillary muscles of the right ventricle each attach via chordae tendineae to the tricuspid valve. (wikipedia.org)
- The anterolateral and posteromedial papillary muscles of the left ventricle attach via chordae tendineae to the mitral valve. (wikipedia.org)
- Opened chambers of the heart displaying papillary muscles and chordae tendineae Papillary muscle infarction Papillary muscles and chordae tendineae Papillary muscles and chordae tendineae Papillary muscles. (wikipedia.org)
- A subvalvular apparatus, comprising of 2 papillary muscles (anterolateral and posteromedial), arise from the LV myocardium and the chordae tendineae, supporting the leaflets. (nih.gov)
- The chordae tendineae are attached to papillary muscles that cause tension to better hold the valve. (wikipedia.org)
- Together, the papillary muscles and the chordae tendineae are known as the subvalvular apparatus. (wikipedia.org)
- In developed countries, more common causes of mitral regurgitation include myxomatous degeneration (eg, mitral valve prolapse with or without connective tissue diseases such as Marfan's syndrome), infective endocarditis, and subvalvular dysfunction (due to papillary muscle dysfunction or ruptured chordae tendineae). (health.am)
- Nonrheumatic mitral regurgitation may develop abruptly, such as with papillary muscle dysfunction following myocardial infarction , valve perforation in infective endocarditis, or ruptured chordae tendineae in mitral valve prolapse. (health.am)
- During ventricular systole, the mitral valve closes and prevents backflow to the LA. The normal function of the mitral valve depends on its 6 components, which are (1) the left atrial wall, (2) the annulus, (3) the leaflets, (4) the chordae tendineae, (5) the papillary muscles, and (6) the left ventricular wall (see the image below). (medscape.com)
- The mitral apparatus is composed of the left atrial wall, the annulus, the leaflets, the chordae tendineae, the papillary muscles, and the left ventricular wall. (medscape.com)
Rupture1
- Papillary muscle rupture can be caused by a myocardial infarct, and dysfunction can be caused by ischemia. (wikipedia.org)
Mitral valve4
- The mitral valve papillary muscles in the left ventricle are called the anterolateral and posteromedial muscles. (wikipedia.org)
- The papillary muscle (PM) is an integral component of the mitral valve apparatus. (biomedcentral.com)
- The papillary muscles tether the mitral valve (the valve between the left atrium and the left ventricle ) and the tricuspid valve (the valve between the right atrium and the right ventricle ) to the wall of the heart. (wikidoc.org)
- If the papillary muscles are not functioning properly, the mitral valve leaks during contraction of the left ventricle and causes some of the blood to travel "in reverse", from the left ventricle to the left atrium, instead of forward to the aorta and the rest of the body. (wikidoc.org)
Acute2
- Acute myocardial infarction (MI), commonly known as a heart attack, is a condition characterized by ischemic injury and necrosis of the cardiac muscle. (medscape.com)
- Papillary Muscle Disorders Numerous complications can occur as a result of an acute coronary syndrome and increase morbidity and mortality. (msdmanuals.com)
Posteromedial2
- Anterolateral muscle blood supply: left anterior descending artery - diagonal branch (LAD) and left circumflex artery - obtuse marginal branch (LCX) Posteromedial muscle blood supply: right coronary artery - posterior interventricular artery (RCA) The posteromedial muscle ruptures more frequently because it only has one source of blood supply, hence RCA occlusion can cause papillary muscle rupture. (wikipedia.org)
- This makes the posteromedial papillary muscle significantly more susceptible to ischemia. (wikidoc.org)
Systole1
- The papillary muscles of both the right and left ventricles begin to contract shortly before ventricular systole and maintain tension throughout. (wikipedia.org)
Trabeculae2
- Objectives: The goal of this study was to assess the relationship of left ventricular (LV) trabeculae and papillary muscles (TPM) with clinical characteristics in a community-based, free-living adult cohort and to determine the effect of TPM on quantitative measures of LV volume, mass, and ejection fraction (EF). (tue.nl)
- In this paper we propose an alternative approach for the implementation of real-time mode in the experiments on muscle preparations (papillary muscles, trabeculae, walls of vessels) based on an external input-output cards with built-in analog-to-digital/digital-to-analog converters and signal processor. (scirp.org)
Hypertrophy2
- None of the affected patients had hypertrophy localized only at the level of the papillary muscle with mid left ventricular obstruction. (nih.gov)
- The Frequency of Fabry Disease in Patients with Cardiac Hypertrophy of Various Phenotypes Including Prominent Papillary Muscle: The TUCARFAB Study in Turkey. (cdc.gov)
Myocardial infarction2
- The clinical significance of the nature of blood supply to the papillary muscles is that a myocardial infarction involving the PDA is more likely to cause mitral regurgitation. (wikidoc.org)
- Severe ischemia can cause the heart muscle to die of oxygen starvation, called a myocardial infarction . (wikidoc.org)
Contractility1
- Taxine B (1), the most potent compound of this group, reduced cardiac contractility and the maximum rate of depolarisation of the action potential in the isolated papillary muscle, acting as a class I antiarrhythmic drug. (unito.it)
Ventricular1
- Background-Idiopathic ventricular arrhythmias (VAs) can originate from the left ventricular papillary muscles (PAMs). (umn.edu)
Chambers of the heart1
- Although blood fills the chambers of the heart, the muscle tissue of the heart, the myocardium , is so thick that it requires coronary blood vessels to deliver blood deep into it. (wikidoc.org)
Originate1
- Arrector pili muscles span both layers of the dermis, they originate in the papillary dermis and attach to hair follicles in the reticular dermis. (khanacademy.org)
Contraction1
- This influx of calcium causes calcium-induced calcium release from the sarcoplasmic reticulum , and free Ca 2+ causes muscle contraction . (wikipedia.org)
Ventricles1
- The papillary muscles are muscles located in the ventricles of the heart. (wikipedia.org)
Preparations1
Myocardium1
- The conduction system consists of specialized heart muscle cells , situated within the myocardium . (wikipedia.org)
Disorders1
- Cardiovascular disease (CVD) is a world-leading health problem and encompasses a broad spectrum of disorders, including diseases of the blood vessels, the heart muscle, the electrical conduction system, and congenital heart disease. (springer.com)
Vessels3
- The coronary circulation is the circulation of blood in the blood vessels that supply blood to and from the heart muscle itself. (wikidoc.org)
- Cardiac veins are the vessels that remove the deoxygenated blood from the heart muscle. (wikidoc.org)
- The cardiac veins are the vessels that remove the deoxygenated blood from the heart muscle and return it to the right atrium . (wikidoc.org)
Characteristics1
- To determine whether catecholamines produce alterations in myocardialmyosin-actin cycling kinetics, we investigated the effects of isoproterenol upon mechanical characteristics of constantly activated heart muscle thought to reflect crossbridge behavior. (njit.edu)
Coronary3
- These arteries, when healthy, are capable of autoregulation to maintain coronary blood flow at levels appropriate to the needs of the heart muscle . (wikidoc.org)
- he coronary arteries supply oxygenated blood to the heart muscle itself. (wikidoc.org)
- Smaller arteries dive deep into the heart muscle and are called subendocardial coronary arteries. (wikidoc.org)
Cardiac muscle cells2
- Papillary muscle from cat heart shows a step-like end-to-end junction of two cardiac muscle cells. (cellimagelibrary.org)
- Circular bundles of contractile cardiac muscle cells. (brainscape.com)
Skeletal3
- The heart is a functional syncytium as opposed to a skeletal muscle syncytium . (wikipedia.org)
- Cardiac muscle has some similarities to neurons and skeletal muscle, as well as important unique properties. (wikipedia.org)
- Like skeletal muscle, depolarization causes the opening of voltage-gated calcium channels and release of Ca 2+ from the t-tubules . (wikipedia.org)
Patients2
- bed into the left ventricle, from where or intramyocardial, However, when a Most patients with calcification of it could reach any part of the body cyst is located in subendocardial en- the cyst wall remain asymptomatic for through systemic circulation [1-3]. (who.int)
- The dothelium, depending on the potency a long time or have nonspecific symp- first successful surgical intervention on of the immune system, patients may toms, such as thrush, pruritus, fever, hydatid cyst was reported by Long in be asymptomatic, silent or catastrophic chest pain and muscle weakness. (who.int)
Axis1
- This is a short axis of the left ventricle (LV) at the papillary-muscle level. (medscape.com)
Mechanical1
Heart muscle1
- These arteries and their branches supply all parts of the heart muscle with blood. (medicinenet.com)
Mass1
- The papillary muscles constitute about 10% of the total heart mass. (wikipedia.org)