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*  Atrium (heart)
The atrium is the upper chamber in which blood enters the heart. There are two atria in the human heart, which receive blood - ... Humans have a four-chambered heart consisting of the right atrium, left atrium, right ventricle, and left ventricle. The atria ... the left atrium from the lungs, and the right atrium from the venous circulation. The atria receive blood, and when the heart ... The right atrium and right ventricle are often referred to as the right heart and similarly the left atrium and left ventricle ...
*  N-type calcium channel
"N-Type calcium channels control sympathetic neurotransmission in human heart atrium". Circulation. 101 (4): 403-7. doi:10.1161/ ... Additionally, N-type calcium channels have known functions in the kidney, and heart. There are many known N-type calcium ... but they are also involved with the function of the heart and kidneys. They are important in neurotransmitter release because ...
*  PD-102,807
"The detection of the non-M2 muscarinic receptor subtype in the rat heart atria and ventricles". Naunyn-Schmiedeberg's Archives ... type 1 receptors mediate part of nitric oxide's vagal facilitatory effect in the isolated innervated rat right atrium". Nitric ...
*  Atrial action potential
In electrocardiography, the atrial action potential are action potentials that occur in the heart atrium. They are similar to ... This indicates that the atria's repolarization currents are not very large and they do not undergo a large repolarization peak ...
*  Junctional rhythm
When this happens, the heart's atrioventricular node takes over as the pacemaker. In the case of a junctional rhythm, the atria ... This sinus rhythm is important because it ensures that the heart's atria reliably contract before the ventricles. In junctional ... between atria and ventricles. Under normal conditions, the heart's sinoatrial node determines the rate by which the organ beats ... Junctional rhythm describes an abnormal heart rhythm resulting from impulses coming from a locus of tissue in the area of the ...
*  Acyl-CoA:lysocardiolipin acyltransferase-1
... but not in organisms lacking heart atria. Recent research has shown that ALCAT1 activity is involved with mitochondrial ... The pathway is thought to be important in maintaining heart function, as the ALCAT1 gene is conserved among many species of ... ALCAT1 is widely distributed throughout the body, with the highest concentrations being in the heart and liver. ALCAT1 ...
*  List of dog diseases
Atrial septal defect* is a hole in the division between the heart atria (upper chambers of the heart). It is an uncommon ... There usually are no signs in dogs except for a heart murmur. However, a large defect can result in heart failure or in ... Heart valve dysplasia (including mitral and tricuspid valve dysplasia) is a congenital heart abnormality in dogs. Dysplasia of ... Heart diseases Degenerative (myxomatous) mitral valve disease* is a common cause of congestive heart failure in dogs, ...
*  XEN-D0101
In a normal heart the atria depolarize and repolarize in a very organized fashion. During atrial fibrillation this process ... A recognized atrial selective drug target is Kv1.5, which is found in atria but not in ventricles. Kv1.5 carries the ultra ... By prolonging the refractory period XEN-D0101 allows the atria to fully relax and not contract prematurely. XEN-D0101 ... Due to the irregular rhythm occurring in the atria, targeting them with antiarrhythmic drugs without affecting the ventricles ...
*  Venous return curve
... because there is no valve between the heart's atria and the large veins. CVP reflects right atrial pressure. Therefore, right ... Venous return is the rate of blood flow back to the heart. It normally limits cardiac output. Superposition of the cardiac ... Venous return (VR) is the flow of blood back to the heart. Under steady-state conditions, venous return must equal cardiac ... Hemodynamically, venous return (VR) to the heart from the venous vascular beds is determined by a pressure gradient (venous ...
*  Body Wars
Passing the heart's left atrium, the ship went through the artery to get to the brain. A neuron contacted the ship, allowing it ... The captain steered Bravo past the heart and into the right ventricle. The guests entered the lungs where the doctor was being ...
*  Atria
... may refer to: Atrium (heart) (plural: atria), an anatomical structure of the heart Atrium (architecture) (plural: atria ... Schuster Atria, the home planet of the aliens in the U.S. TV series Star-Crossed Atria Software, the original maker of ... an American assisted living company Atria or Adria, an Etruscan city in the Veneto region of Northern Italy Atria or Atri, ... a star in the constellation Triangulum Australe Atria Institute on gender equality and women's history Atria Senior Living, ...
*  PFO
... may refer to: Patent foramen ovale - a blood-flow pathway between a human heart's atriums, normally naturally closed after ...
*  KCNE1
... is expressed in human heart (atria and ventricles), whereas in adult mouse heart its expression appears limited to the ... Goldman AM, Glasscock E, Yoo J, Chen TT, Klassen TL, Noebels JL (Oct 2009). "Arrhythmia in heart and brain: KCNQ1 mutations ... Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, ... American Heart Journal. 167 (2): 274-280.e1. doi:10.1016/j.ahj.2013.09.020. PMID 24439990. Heerdt PM, Kant R, Hu Z, Kanda VA, ...
*  Depolarization
... occurs in the four chambers of the heart: both atria first, and then both ventricles. The sinoatrial (SA) node ... At the same time, the atria re-polarize and relax. The ventricles are re-polarized and relaxed at the T wave. This process ... The SA node sends the depolarization wave to the atrioventricular (AV) node which-with about a 100 ms delay to let the atria ... on the wall of the right atrium initiates depolarization in the right and left atria, causing contraction, which is symbolized ...
*  Atrial flutter
Heart rate is a measure of the ventricular rather than atrial activity. Impulses from the atria are conducted to the ventricles ... Prolonged atrial flutter with fast heart rates may lead to decompensation with loss of normal heart function (heart failure). ... Atypical atrial flutter originating from the right atrium and heart's septum have also been described. Play media While atrial ... This leads to pooling of the blood in the heart and can lead to the formation of blood clots in the heart which pose a ...
*  Bicuspid aortic valve
... the mitral valve is the only bicuspid valve and this is situated between the heart's left atrium and left ventricle. Heart ... If these become severe enough, they may require heart surgery.The heart is put under more stress in order to either pump more ... Bicuspid aortic valve (BAV) is an inherited form of heart disease in which two of the leaflets of the aortic valve fuse during ... Other congenital heart defects are associated with bicuspid aortic valve at various frequencies, including coarctation of the ...
*  Glucocorticoid remediable aldosteronism
by the stretch receptors located in the atria of the heart. by adrenoglomerulotropin, a lipid factor, obtained from pineal ...
*  Trochidae
The top snails are characterized by some primitive traits: a heart with two atria. They have retained only one kidney and the ...
*  Primitive ventricle
Heart showing expansion of the atria. This article incorporates text in the public domain from the 20th edition of Gray's ... The septum grows upward from the lower part of the ventricle, at a position marked on the heart's surface by a furrow. Its ... The primitive ventricle or embryonic ventricle of the developing heart, together with the bulbus cordis that lies in front of ...
*  Aldosterone
plasma acidosis the stretch receptors located in the atria of the heart. If decreased blood pressure is detected, the adrenal ... Aldosterone has exactly the opposite function of the atrial natriuretic hormone secreted by the heart. Aldosterone is part of ...
*  Fetus
The blood then moves to the right atrium of the heart. In the fetus, there is an opening between the right and left atrium (the ... arteries from the right atrium and ventricle of the heart and less to flow through the foramen ovale into the left atrium. The ... Some of the blood from the right atrium does not enter the left atrium, but enters the right ventricle and is pumped into the ... The heart, hands, feet, brain and other organs are present, but are only at the beginning of development and have minimal ...
*  Fetal circulation
The blood then moves to the right atrium of the heart. In the fetus, there is an opening between the right and left atrium (the ... It is the fetal heart and not the mother's heart that builds up the fetal blood pressure to drive its blood through the fetal ... Some of the blood entering the right atrium does not pass directly to the left atrium through the foramen ovale, but enters the ... Before this, the embryo possesses a tubular heart. The embryonic heart begins to beat at approximately the same rate as the ...
*  Terminal sulcus (heart)
The terminal sulcus is a groove in the right atrium of the heart. The terminal sulcus marks the separation of the right atrial ... On the internal aspect of the right atrium, corresponding to the terminal sulcus is the crista terminalis. The superior border ... and represents the line of union of the sinus venosus of the embryo with the primitive atrium. ...
*  Circulatory system
... roughly speaking from areas below the heart). These two great vessels empty into the right atrium of the heart. The heart ... The right atrium is the upper chamber of the right side of the heart. The blood that is returned to the right atrium is ... The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs. In the human heart there is one atrium and ... Oxygen deprived blood from the superior and inferior vena cava enters the right atrium of the heart and flows through the ...
*  Isolated atrial amyloidosis
... is a form of amyloidosis affecting the atria of the heart. It is associated with accumulation of ...