Normally, an electrical signal starts at the sinoatrial or SA node in the right atrium.

通常，电冲动从位于右心房的窦房结开始。

Ultimately, all of the blood ends up in the superior or inferior vena cava and dumps into the right atrium.

最终，所有的血液都回流至上腔静脉和下腔静脉，最终抵达右心房。

There's also a tiny third opening into the right atrium called the coronary sinus, which collects blood from coronary vessels returning from the myocardium.

右心房还有第三个微小的开口叫冠状窦，以收集从心肌返回的冠状静脉血液。

Now during development, the fetus doesn't use the lungs yet, and relies on oxygenated blood from the placenta that comes into the right atrium.

在胚胎发育期，胎儿的肺还没有使用，其主要依赖于来自胎盘进入到右心房的氧合血。

The S.V.C. tear extends into the right atrium.

上腔静脉的破损延伸到了右心房。

There's a concave deformity in the right atrium.

右心房有凹陷形变。

And when the right atrium contracts, the blood passes through the tricuspid valve, into the relaxed right ventricle, and right back to where we started.

当右心房收缩时，血液通过三尖瓣，进入放松的右心室，回到我们开始的地方。

C is for cardiac silhouette and size, this is the cardiac silhouette and there's an atrial appendage, the right atrium and the left ventricle.

C指" Cardiac" 心脏轮廓和大小，这是心脏的轮廓，这里是心耳、右心房和左心室。

In these individuals, it's possible for a blood clot to go from the right atrium to the left atrium, bypassing the lungs completely.

在这些人中，栓子可能从右心房直接进入左心房，而不需要通过肺循环了。

If you aim the needle incorrectly, you could nick the very-thin-walled right atrium.

如果插错地方 你可能会弄破极薄的右心房壁。

The venae cavae empties the deoxygenated blood into the right atrium of the heart.

腔静脉将脱氧血注入心脏的右心房。

When the atria contracts, blood in the right atrium is forced through the tricuspid valve into the right ventricle.

当心室收缩时，右室血液经肺动脉瓣进入肺动脉，同时三尖瓣关闭防止血液回流至心房。

So this trip from the left ventricle of the heart, to the body, and back to the right atrium of the heart is called the systemic circulation.

血液从左心室到身体，再回到心脏的右心房的行程，被称为体循环。

On the right side, blood's pumped out the right ventricle through the aorta to the body, and blood comes back the the right atrium and right ventricle and then restarts.

对于右边来说，血液从右心室进入主动脉流经全身各处，最后回到右心房，再进入右心室，然后重复这一循环。

P wave is the summation of 2 smaller waves resulting from depolarization of the right atrium followed by that of the left atrium.

P波是右心房去极化，然后左心房去极化产生的2个较小波的总和。

Deoxygenated blood from the body enters the heart at the right atrium and passively travels past the tricuspid valve to fill the right ventricle.

来自身体的脱氧血进入右心房的心脏，被动地通过三尖瓣注入右心室。

Now, the lower half of the body drains into the inferior vena cava and the upper half drains into the superior vena cava both of which dump blood back into the right atrium.

然后，下半身的血液流入下腔静脉，上半身的血液则流入上腔静脉，由这两者将血液送回右心房。

Remember in chest x-rays we define features relative to the patient, so the right atrium is on the left side of this x-ray and the left ventricle is on the right side.

要记住，这些结构是相对患者来说的，所以右心房在胸片的左侧，左心室在右侧。

It's found in the right atrium, and when it fires, it quickly sends a signal to the left atrium, causing the atria to contract simultaneously.

它位于右心房中，启动时会迅速向左心房发送信号，导致心房同时收缩。

In right atrial enlargement, depolarization of the right atrium lasts longer than normal and its waveform extends to the end of that of the left atrium.

右心房扩大时，右心房除极持续时间比正常长，波形延伸至左心房末端。