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A Transcript of the Interpreted Excerpt of The Cardiovascular System in ASL
This is the transcript of the interpretation created by Patty McCutcheon of the excerpt of Kendall Kail's technical lecture in ASL. For a more print friendly version and to see it in context, download the PDF file from To the Heart of the Matter .
Today's lecture will focus on the cardiovascular system. It is one of 12 major organs found within the body. I'd like to talk specifically about the heart. If you have glucose circulating throughout the body, the heart is responsible for that circulation. If oxygen is to get to the brain, again the heart is responsible for that.
There are two basic components to the heart. There's the actual pump, the heart, an organ. And then there are veins, arteries, and other hollow tubes that are throughout the body. Those are the two basic components.
To understand what the heart is made of you need to understand that we are all made of cells. They are microscopic components to our b- body. Cardiac muscle cells, otherwise known as CMC, is very unique to the heart, found nowhere else in the body. It's the only one of its kind. It is also unique in its makeup and that it is autorhythmic, meaning that it beats on its own. So, if you would remove it from the, from the thorassic cavity, it would continue to beat on its own.
The cardiovascular cells also have adjacent cell that surround the heart. There are many millions, two to three million cells, that make up the heart. But to stimulate the heart to pump, it only needs two or three cells to stimulate all the other cells making it autorhthymic.
If you were to dissect the heart, you would find four chambers. To look at the chambers, the upper chambers are called the atrium, and the lower chambers are called the ventricles.
The heart has many different functions. The heart receives deoxygenated blood, otherwise known as dirty or bad blood, that is circulated from the body up to the heart. It can come from your brain, your liver, or your small toe. It's circulated from those parts of the body. The heart receives it, sends it on to the lungs, where it is diffused with oxygen, and then brought back to the heart to be pumped back out to your body tissue....
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