窦房结
参考答案:
位于上腔静脉与右心房交界处的界沟上1/3的心外膜下,呈长梭形,为心的正常起搏点。
---Did the book give the information you needed ?
--- Yes. But __________it, I had to read the entire book.
A.to find
B.find
C.to be finding
D.finding
下列体征不是重度中毒的是()
A.脑水肿伴有意识障碍
B.意识障碍达到深昏迷
C.意识障碍达到去大脑皮层状态
D.血液中的HbCO达到30%
E.意识障碍伴呼吸衰竭