| pacemaker | (n) a specialized bit of heart tissue that controls the heartbeat, Syn. SA node, sinoatrial node, cardiac pacemaker |
| 洞結節 | [どうけっせつ, doukessetsu] (n) (See 洞房結節) sinus node; sinoatrial node [Add to Longdo] |
| 洞房結節 | [どうぼうけっせつ, douboukessetsu] (n) sinoatrial node [Add to Longdo] |