| 单词 | sinoatrial node |
| 例句 | 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 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 A heartbeat begins when the organ’s pacemaker, a structure called the sinoatrial node, fires off an electrical impulse that disperses across the atria, the blood-collecting chambers. Immune cells unexpectedly help the heart keep its beat 2017-04-20T04:00:00Z TBX18 is normally active in embryos, where it triggers, among other things, the formation of the heart’s rhythm keeping centre, the sinoatrial node. Teaching The Heart To Beat Again 2014-07-17T04:00:00Z In healthy people, a small region of the heart, called the sinoatrial node, fires the electrical impulses that determine heart rate. Heart Cells Transformed into "Biological Pacemaker" 2014-07-17T04:00:00Z 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 It is an electrical impulse that starts in cardiac muscle cells at the sinoatrial node. Biology for AP Courses 2022-06-09T00:00:00Z It is the excitation of cardiac muscle cells at the atrioventricular node followed by the sinoatrial node. Biology for AP Courses 2022-06-09T00:00:00Z This gene converted this area of heart muscle cells into sinoatrial node cells. Heart Cells Transformed into "Biological Pacemaker" 2014-07-17T04:00:00Z |
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