【菜菜作品】正常心电图项坠…为什么要加“正常”二字?因为大家平时看到的心电图项坠都是不正常的…[FACE WITH TEARS OF JOY][FACE WITH TEARS OF JOY]…现在就此图为大家普及下心电图基本知识…[FACE WITH STUCK-OUT TONGUE AND WINKING EYE][FACE WITH STUCK-OUT TONGUE AND WINKING EYE]…心脏之所以会有规律地搏动是由于窦房结发出电信号…从心房至心室(此处省略1w字)…引起心肌细胞收缩和舒张…[SMILING FACE WITH OPEN MOUTH AND SMILING EYES][SMILING FACE WITH OPEN MOUTH AND SMILING EYES]

