冠状动脉和心脏静脉丨医学英语视听学习

Coronary arteries and cardiac veins

冠状动脉和心脏静脉

This time, we're going to be talking about the coronary arteries and cardiac veins.

这节课，我们将讨论冠状动脉和心脏静脉。

Now, the coronary arteries and veins are part of the coronary circulation that is responsible for nourishing your heart muscle, also known as myocardium, during its tireless effort of pumping blood around your body.

冠状动脉和静脉属于冠脉循环，冠脉循环主要是在不停地向全身泵血期间，滋养心肌（myocardium）。

And to do so, we’re going to be using images like these that you see here on the screen, like this one on the right side where you see the different arteries and veins in blue and red.

因此，我们将使用类似于屏幕上的这些图片，如右侧这张，大家可以看到用蓝色表示的不同的动脉和用红色表示的不同静脉。

And you can also see here a view of the anterior view of the heart where we then cut the aorta here. You see the superior vena cava. And notice here on the aorta, two important blood vessels that we’re going to be covering here on this tutorial.

大家也可以看到心脏的前视图图片，我们在这里切断主动脉。大家看到上腔静脉。注意这里，关于主动脉，我们将在本教程中介绍两条重要的血管。

Here, you’ll find the left coronary artery and, here, the right coronary artery.

在这里，大家将看到左冠状动脉，这儿是右冠状动脉。

And on this image of the left side here, you can see then the diaphragmatic surface of the heart, where you can also see the different coronary arteries and cardiac veins that we’re going to be talking about on this tutorial.

在左侧的图片上，大家可以看到心脏的膈面，也可以看到我们将在本教程中介绍的不同的冠状动脉和心脏静脉。

And just to show you what’s happening here on this image, you can see here the aortic arch, the pulmonary arteries here, the right one and the left one. You can also see here the superior vena cava and the inferior vena cava, both cut, and the pulmonary veins.

我们来看一下图片上的结构，大家可以看到主动脉弓、肺动脉，右肺动脉和左肺动脉，也可以看到上腔静脉和下腔静脉（都已切断），以及肺静脉。

Notice here a bit of the right atrium and also the left atrium and below you then going to find the left ventricle and the right ventricle.

注意这里是部分右心房和左心房，然后在下面，也会看到左心室和右心室。

Now, that we understand what’s happening here on this image is that it is time for us to move on and start talking about the different coronary arteries.

至此，我们大致了解了这张图片，现在继续讨论不同的冠状动脉。

There are two major coronary arteries, the left coronary artery and the right coronary artery that I talked about. So, here you see the right coronary artery and here you see then the left coronary artery.

我们有两条主要的冠状动脉，即我之前提到的左冠状动脉和右冠状动脉。这是右冠状动脉，然后这是左冠状动脉。

Now, these two arteries arise from the aortic sinus as you can see also here on this image of the ascending aorta which is cut here on the image and they gave off several branches which we will discuss later in this tutorial.

这两条动脉起于主动脉窦，在这张图片上也可以看到升主动脉（已切断），它们发出许多分支，我们稍后会讨论。

Now, be aware that these two coronary arteries are sometimes referred to as the epicardial coronary arteries in some texts, so just to know that they are referring to the coronary arteries, if you do come across that name in your reading.

请注意，有些书籍有时将这两条冠状动脉写作“心外冠状动脉”，因此，如果在阅读中遇到这个名称，请了解它们指的是冠状动脉。

So let’s take a closer look here by highlighting it at the left coronary artery.

我们来增强它的亮度，更仔细地观察一下左冠状动脉。

The left coronary artery arises from the left aortic sinus runs between the left auricle – as you can see here – and also the trunk of the pulmonary artery which you cannot see here because we just removed here the pulmonary trunk where you could then see the two pulmonary arteries.

左冠状动脉起于走行于左心耳之间的左主动脉窦，如这儿所示，我们在这里看不到肺动脉干，因为我移除了肺动脉干，现在大家可以看到两条肺动脉。