The Heart, part 1 - Under Pressure: Crash Course A&P #25
Your heart gets a lot of attention from poets, songwriters, and storytellers, but today Hank's gonna tell you how it really works. The heart's ventricles, atria, and valves create a pump...
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Your heart, that throbbing, beating muscle, is probably the most iconic organ in your body. No other organ gets its own holiday, or as much radio play. And you’re not likely to get a love note decorated with a kidney or a spleen, or even a brain, which is really what rules the emotions. Don’t get me wrong, the heart does some great things -- namely, it powers the entire circulatory system, transporting nutrients, oxygen, waste, heat, hormones, and immune cells throughout the body, over and over. But in the end, the heart does not make you love. It doesn’t break apart if you get dumped by your boo. And it’s not a lonely hunter. The truth is, the heart is really just a pump -- a big, wet, muscley brute of a pump. And it doesn’t care about poetry or choc...
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Your heart, that throbbing, beating muscle, is probably the most iconic organ in your body. No other organ gets its own holiday, or as much radio play. And you’re not likely to get a love note decorated with a kidney or a spleen, or even a brain, which is really what rules the emotions. Don’t get me wrong, the heart does some great things -- namely, it powers the entire circulatory system, transporting nutrients, oxygen, waste, heat, hormones, and immune cells throughout the body, over and over. But in the end, the heart does not make you love. It doesn’t break apart if you get dumped by your boo. And it’s not a lonely hunter. The truth is, the heart is really just a pump -- a big, wet, muscley brute of a pump. And it doesn’t care about poetry or choc...
