The sinoatrial node (SAN) is the normal pacemaker generating the regular, rhythmic contraction of the mammalian heart. Pacemaker activity of SAN cells is based on the diastolic depolarization, during which SAN cells depolarize spontaneously toward the action potential threshold. However, single SAN ...
B) SA node C) AV node D) ventricle Cardiac Pacemaker Cells: The heart is primarily made up of cardiac myocytes but there exists a small population of cells called cardiac pacemaker cells. These cells display autorhythmicity by continuously spontaneously deplarizin...
-they sing the SA node pacemaker tune-bundle of His, purkinje fibers, AV node-can take over, although at a lower rate, if the normal pacemaker fails (when the SA node is malfunctioning or doesnt get enough oxygen) escape beat -The AV node assumes the Pacemaker activity ectopic focus -whe...
The sino-atrial node is the primary site from which the mammalian heart is paced, but the mechanisms underlying the pacemaking still remain clouded. It is generally believed that the hyperpolarization-activated current If, encoded by Hyperpolarization-activated cyclic nucleotideâ gated (HCN) genes,...
Roles of Cl- channels and Ca2+ mobilization in stretch-induced increase of SA node pacemaker activity Examines the effects of several compounds that block various types of stretch-sensitive ion channels on the stretch-induced acceleration of pacemaker activity in multicellular sinoatrial node tissue prep...
Sinoatrial (SA) node 相当于是一个总司令,发布命令,位于上腔静脉和右心房的交界处,由交感神经和副交感神经系统控制。 The main pacemaker that initiates each heartbeat 。It is located at the junction of the superior vena cava and the right atrium. ...
Improvement of sinus node pacemaker function 翻译结果2复制译文编辑译文朗读译文返回顶部 Improve the getting up and fighting the function of the sinus room knot 翻译结果3复制译文编辑译文朗读译文返回顶部 Improving sinus pacing of the SA node function ...
Effects of hypoxia on the electrical activity of pacemaker cells of rabbit SA nodedoi:10.1016/0022-2828(89)91564-2O. TripathiElsevier LtdJournal of Molecular & Cellular Cardiology
The normal heart rhythm, known as sinus rhythm, originates in specialized cardiac cells, called pacemaker cells, in the sino-atrial (SA) or sinus node and has been defined as a sinus node rate of 60 to 100 beats/minute. Each heart beat or contraction is initiated by generation of an ...
The sinoatrial (SA) node is a complex structure in which pacemaker cells at the node center activate surrounding atrial tissue, leading to spontaneous beating of the heart tissue. Using multielectrode arrays (MEA), we conducted detailed studies of the rabbit sinoatrial node with spatial resolution ...