| 单词 | right atrium |
| 例句 | Forssmann threaded a thin tube through his arm until it pierced his right atrium. A History of the Heart, That Most Vital of Organs 2018-11-05T05:00:00Z Mammals also have a specialized group of cardiac fibers located in the walls of their right atrium called the sinoatrial node, or pacemaker, which determines the rate at which the heart beats. Fundamentals of Biology 2015-01-01T00:00:00Z The signal for contraction begins at a location on the outside of the right atrium. Concepts of Biology 2013-04-25T00:00:00Z More than 1 million mostly older Americans have seriously leaking tricuspids, a valve on the right side of the heart that lets deoxygenated blood flow between the right atrium and the right ventricle. New Treatment Could Help Fix the Heart’s ‘Forgotten Valve’ 2023-03-04T05:00:00Z In addition, the right atrium receives blood from the coronary sinus which drains deoxygenated blood from the heart itself. Biology for AP Courses 2022-06-09T00:00:00Z On the drive through the right atrium of County Leitrim, mountains rise fiercely, the grass giving way to striations of gray rock. A road trip through Yeats country in County Sligo, Ireland 2022-07-29T04:00:00Z Blood flows from the inferior vena cava to the right atrium, mixing with fetal venous blood along the way. Anatomy and Physiology 2013-06-19T00:00:00Z The signal has, by this time, passed down the walls of the heart, through a point between the right atrium and right ventricle. Concepts of Biology 2013-04-25T00:00:00Z Ebstein anomaly, according to Cincinnati Children’s Hospital, is an abnormality in the tricuspid valve, which separates the right atrium from the right ventricle, and affects normal blood flow. Texas judge rules hospital can remove baby Tinslee Lewis from life support, family has week to appeal 2020-01-02T05:00:00Z The internal pacemaker starts at the sinoatrial node, which is located near the wall of the right atrium. Biology for AP Courses 2022-06-09T00:00:00Z Tinslee was born with Ebstein Anomaly, which, according to Cincinnati Children’s Hospital, is an abnormality in the tricuspid valve, which separates the right atrium from the right ventricle, and affects normal blood flow. Court order prevents hospital from removing 9-month-old's life support as family looks for new facility 2019-11-11T05:00:00Z In response to this pressure change, the flow of blood temporarily reverses direction through the foramen ovale, moving from the left to the right atrium, and blocking the shunt with two flaps of tissue. Anatomy and Physiology 2013-06-19T00:00:00Z The signal for contraction begins in the wall of the right atrium. Concepts of Biology 2013-04-25T00:00:00Z It was an imperfect beat — the right atrium was stuttering — but that soon resolved. A terrible crime, a patient waiting for a transplant: The tragic, redemptive journey of one heart. 2019-09-30T04:00:00Z Electrical charges pulse from the SA node causing the two atria to contract in unison; then the pulse reaches the atrioventricular node between the right atrium and right ventricle. Biology for AP Courses 2022-06-09T00:00:00Z “We put three clamps – a clamp in each place – on the right atrium of the heart, the inferior vena cava, and the portal vein and hepatic artery of the liver.” Woman allegedly had 11-inch knife in back for over a week 2019-05-31T04:00:00Z It empties into the superior and posterior portions of the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z Then they bring in the porcine heart, and then you do your anastomosis, it’s the left atrium to right atrium, the pulmonary artery, and then you remove the air. Listen: Pig-heart transplants in baboons work for longer than ever before 2018-12-04T05:00:00Z First he separated the superior and inferior venae cavae, the two large vessels that return blood from the body into the right atrium, and severed them. A terrible crime, a patient waiting for a transplant: The tragic, redemptive journey of one heart. 2019-09-30T04:00:00Z The purpose of the Valsalva maneuver is to accentuate the blood going from the right atrium to the left atrium by raising the pressure in the right side of the heart. Many people live unaware of a hole in the heart that doesn’t close 2018-09-21T04:00:00Z His body remains riddled with BBs and shrapnel, a piece of which is lodged in the right atrium of his heart. Boston Marathon Prosecution Lets Victims Cap Case 2015-04-23T04:00:00Z Inflation of the lungs decreases blood pressure throughout the pulmonary system, as well as in the right atrium and ventricle. Anatomy and Physiology 2013-06-19T00:00:00Z A piece of shrapnel slammed into a vein and traveled to his heart's right atrium, where it remains today. Prosecutors focus on Boston Marathon amputees 2015-04-23T04:00:00Z In A-fib, for reasons that are poorly understood, multiple pacemakers form in the right atrium leading to chaotic discharging and circular currents in the right atrium. The A-Fib Marketing Blitz: Be Still My Heart 2014-01-30T20:52:45Z He was born with a malformed heart missing its right atrium and ventricle and required several surgeries to fix. Obituary: Electron Boy lit up the lives of many 2011-09-17T19:16:03Z Erik was born with a malformed heart that was missing its right atrium and ventricle and required several surgeries to fix. Obituary: 'Electron Boy' Erik Martin dies 2011-09-16T20:04:04Z In response to this pressure change, the flow of blood temporarily reverses direction through the foramen ovale, moving from the left to the right atrium, and blocking the shunt with two flaps of tissue. Anatomy and Physiology 2013-06-19T00:00:00Z Because of the back pressure that occurs within the right side of the heart with congestive heart failure, one of the four chambers of the heart, the right atrium, will enlarge over time. Heart failure is cause of elderly dog's coughing 2011-05-25T14:10:05Z The pacemaker is a little mass of muscle fibers the size and shape of an almond known medically as the sinoatrial node located in the right atrium, one of four chambers of the heart. The new wave of MRI-safe heart devices 2011-02-16T17:15:00.417Z The whole sinus venosus has become part of the right atrium. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z The baroreceptors in the venae cavae and right atrium monitor blood pressure as the blood returns to the heart from the systemic circulation. Anatomy and Physiology 2013-06-19T00:00:00Z The blood in the superior and inferior venae cavae flows into the right atrium, which pumps blood into the right ventricle. Anatomy and Physiology 2013-06-19T00:00:00Z Baby already is on the proper medications to help her heart function better and slow the increase in the size of her right atrium. Heart failure is cause of elderly dog's coughing 2011-05-25T14:10:05Z Blood is flowing into the right atrium from the superior and inferior venae cavae and the coronary sinus. Anatomy and Physiology 2013-06-19T00:00:00Z The sinus venosus develops into the posterior portion of the right atrium, the SA node, and the coronary sinus. Anatomy and Physiology 2013-06-19T00:00:00Z The right atrium receives systemic blood relatively low in oxygen and pumps it into the right ventricle, which pumps it into the pulmonary circuit. Anatomy and Physiology 2013-06-19T00:00:00Z Figure 19.4 Dual System of the Human Blood Circulation Blood flows from the right atrium to the right ventricle, where it is pumped into the pulmonary circuit. Anatomy and Physiology 2013-06-19T00:00:00Z The foramen ovale allowed blood in the fetal heart to pass directly from the right atrium to the left atrium, allowing some blood to bypass the pulmonary circuit. Anatomy and Physiology 2013-06-19T00:00:00Z There are also low-pressure baroreceptors located in the walls of the venae cavae and right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z Normally, blood flow into the aorta is the same as blood flow back into the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z From the right atrium, blood moves into the right ventricle, which pumps it to the lungs for gas exchange. Anatomy and Physiology 2013-06-19T00:00:00Z The right coronary artery proceeds along the coronary sulcus and distributes blood to the right atrium, portions of both ventricles, and the heart conduction system. Anatomy and Physiology 2013-06-19T00:00:00Z The small cardiac vein parallels the right coronary artery and drains the blood from the posterior surfaces of the right atrium and ventricle. Anatomy and Physiology 2013-06-19T00:00:00Z In addition, there is a specialized pathway called Bachmann’s bundle or the interatrial band that conducts the impulse directly from the right atrium to the left atrium. Anatomy and Physiology 2013-06-19T00:00:00Z The wave of depolarization begins in the right atrium, and the impulse spreads across the superior portions of both atria and then down through the contractile cells. Anatomy and Physiology 2013-06-19T00:00:00Z The two major systemic veins, the superior and inferior venae cavae, and the large coronary vein called the coronary sinus that drains the heart myocardium empty into the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z The coronary sinus is a large, thin-walled vein on the posterior surface of the heart lying within the atrioventricular sulcus and emptying directly into the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z While the bulk of the internal surface of the right atrium is smooth, the depression of the fossa ovalis is medial, and the anterior surface demonstrates prominent ridges of muscle called the pectinate muscles. Anatomy and Physiology 2013-06-19T00:00:00Z Normally, one or more marginal arteries arise from the right coronary artery inferior to the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z The right atrium receives all of the systemic venous return. Anatomy and Physiology 2013-06-19T00:00:00Z The exception to this is that most venous blood flow from the coronary veins flows directly into the coronary sinus and from there directly into the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z Unlike these other cardiac veins, it bypasses the coronary sinus and drains directly into the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z Figure 20.36 Veins of the Thoracic and Abdominal Regions Veins of the thoracic and abdominal regions drain blood from the area above the diaphragm, returning it to the right atrium via the superior vena cava. Anatomy and Physiology 2013-06-19T00:00:00Z Neural mechanisms include the cardiovascular centers in the medulla oblongata, baroreceptors in the aorta and carotid arteries and right atrium, and associated chemoreceptors that monitor blood levels of oxygen, carbon dioxide, and hydrogen ions. Anatomy and Physiology 2013-06-19T00:00:00Z |
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