百度试题 结果1 题目The pacemaker of the heart is the___(two words) 相关知识点: 试题来源: 解析 (1)sinoatrial node;SA node 反馈 收藏
刷刷题APP(shuashuati.com)是专业的大学生刷题搜题拍题答疑工具,刷刷题提供The pacemaker for the heart is ordinarily theA.sinoatrial nodeB.atrioventricular nodeC.atrioventricular bundle (of His)D.subendocardial plexusE.membranous interventricular septum的答
The heart is made up of many cardiomyocytes, or cardiac muscle cells, that contract in response to electrical stimulation to produce the heart beat. It is vitally important for the cardiomyocytes to coordinate their contractions, so tha...
The sinoatrial (SA) nodes are areas of the heart's atrium that act as the heart's pacemaker. Impulses from the SA node cause the heart’s chambers to contract. Purkinje fibers receive their impulses from the SA node and move the impulse through the heart’s muscles. Just below the atrium...
PURPOSE: To provide a cardiac pacemaker having desired features such as physiological responsiveness, quick responsiveness, long-time reliability and high-grade limitedness by sensing blood pressure and controlling the frequency of heartbeats corresponding to this blood pressure. CONSTITUTION: A pulse ...
The researchers also want to use the technology in other forms of heart failure, such as cardiomyopathy, to see who might need a pacemaker or other forms of treatment. Dr Mike Knapton, from the British Heart Foundation, said, “This exciting use of computer software in medical pra...
They act also to conduct impulses throughout the heart, in a rapid and coordinated fashion1. The main components of the cardiac conduction system are the sinus node of the right atrium, which is the primary pacemaker; the atrioventricular conduction axis, which normally forms the only pathway ...
Pacemaker for the therapy of congestive heart failure - Biventricular stimulationPurerfellner, HWinter, SSchwierz, TNesser, H JBohmig, H.J
If both fail, a final tertiary pacemaker (Bundle of His) may coordinate contractions at a constant rate of roughly 30 - 40 bpm Fibrillation chaotic, irregular contractions of the heart, as in atrial or ventricular fibrillation Defibrillation The use of electrical shock to restore the heart's ...
The SA node responds to the body's overall need for blood and increases the heart rate when necessary, such as during exercise, emotional excitement, or illness such as fever. The SA node is sometimes called the “natural pacemaker” of the heart. ...