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| 窦房结 (呈梭形，大小约 15mm×5mm×1.5mm。窦房结位于上腔静脉与右心房交界处，界沟上端的心外膜深面。窦房结是心的正常起搏点，产生的冲动经结间束传至心房肌和房室结) | |||
| 窦房结 | |||
| sinuatrial node: 3 phrases in 2 subjects |
| Anatomy | 2 |
| Otorhinolaryngology | 1 |
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