More blood pumping throughout your system ensures more blood to your auditory system.

血液在全身流通也确保更多的血液流向听觉系统。

His blood pumped faster, and just before he was about to yell, he sighed.

他的血液流速加快了，而就在他要喊出来的时候，他叹了口气。

Also, your heart rate goes a bit up, making your blood pump faster and boosting your further performance.

同时，你的心率会上升，这样会加快血液流速，并进一步提高运动表现。

This causes your cheeks to turn a bright, rosy red because of all of the extra blood pumping through your face.

这会导致你的脸颊变成明亮的玫瑰红色，因为所有的血液都会流过你的脸。

Because of this the kidneys get about a quarter of the cardiac output which is blood getting pumped out of the left ventricle.

因此，肾血流量约占心输出量（左心室输出量）的1/4。

Few things get the blood pumping like good music. Many people believe louder is better if you are listening to rock and roll.

很少有东西能像音乐那样让人血液沸腾，很多人认为听摇滚乐时大音量更好。

We previously learned that cardiac output is the amount of blood pumped per minute by each ventricle.

我们先前了解到，心输出量是每个心室每分钟泵出的血液量。

Cardiac output (CO) is the term used to show the amount of blood pumped per minute by each ventricle.

心输出量（CO）是用于显示每个心室每分钟泵血量的术语。

Cardiac output equals the number of heartbeats per minute times the volume of blood pumped out of the ventricles with each heartbeat.

心输出量等于每分钟心跳次数乘以每次心跳从心室泵出的血液量。

In some cases, patients might be treated with cardiac resynchronization therapy pacemakers, which can stimulate the ventricles to contract at the same time and potentially improve the blood pumped out.

而在某些情况下，病人可以接受心脏再同步治疗（CRT）；CRT起搏器可以刺激心室同时收缩，并有潜力提高心脏的泵血量。

The higher the cardiac output, the higher the mean arterial pressure, because there is more blood being pumped out of the heart and flowing into the arterial system.

心输出量越高，平均动脉压越高，因为有更多的血液从心脏泵出并流入动脉系统。

This is a measure of how much oxygen the lungs absorb into the blood, how much blood the heart can pump, and how efficiently your muscles are able to grab the oxygen out of the blood.

这是用来衡量肺部能吸入多少氧气到血液中，心脏能泵出多少血液，以及你的肌肉从血液中吸收氧气的效率。

Now that we know what influences the heart rate, let's look at some of the factors that influence the amount of blood pumped during each heartbeat, which is your stroke volume.

现在我们知道了什么会影响心率，我们看一下影响每次心跳期间的泵血量（即每博输出量）的一些因素。

What we have from the example just described is a formula for figuring out the amount of blood pumped per minute by each ventricle, what we call the cardiac output.

从刚刚描述的示例中我们得到的是一个公式，用于计算每个心室每分钟泵出的血液量，我们称之为心输出量。

Your heart is so important that it gets its very own muscle tissue type — cardiac muscle, which looks striped, or striated, and also functions involuntarily to keep your blood pumping without you having to think about it.

你的心脏是如此重要以至于它有自己的肌肉组织类型——心肌，看起来是条纹状的，它也不由自主地起作用来保持你的血液流动，而你不用去想它。

Two scientists named Frank and Starling noticed that the increase in end-diastolic volume, or preload, results in an increased stroke volume and more blood being pumped out of the heart with each heartbeat.

两位名为Frank和Starling的科学家注意到，舒张末期容积（即预负荷）的增加导致每搏输出量增加，并且每次心跳都会将更多的血液从心脏中泵出。

I took another right, a left, and as I went I rehearsed in my head the reverse of where I had been. Right. Left. Break. Right. Left. My heart rate began to rise a little, so that I could hear the blood pumping in my ears.

我又向右转， 向左转，一边走，一边在脑海中排练与之前所在位置相反的情况。 正确的。 左边。 休息。正确的。 左边。 我的心率开始有点加快， 以至于我能听到血液在我耳边跳动的声音。