Lub Dub
"The first heart sound or "lub" results from closure of the tricuspid and mitral valves. It is a rather low-pitched and a relatively long sound which, as indicated in, represents the beginning of ventricular systole. The second heart sound, or "dub," marks the beginning of ventricular diastole. It is produced by closure of the aortic and pulmonary (pulmonic) semilunar vanes when the intraventricular pressure begins to fall. This "dub" sound is typically heard as a sharp snap because the semilunar valves tend to close much more rapidly than the AV valves. Because diastole occupies more time than systole, a brief pause occurs after the second heart sound when the heart is beating at a normal rate. Therefore, the pattern that one hears is one of: "lub-dub" pause, "lub-dub" pause, and so on. Sometimes, especially in young normal individuals, a third heart sound can be heard. This sound is produced by the very rapid influx of blood into the partially filled ventricle. It is typically very faint and as such difficult to hear" Reference: http://www.jdaross.cwc.net/normal_heart_sounds.htm
The Urban Dictionary Mug
This was purchased as a gift , and it describes the recipient perfectly . It arrived sooner than expected, and I am very impressed with the quality .
I took time designing it but wasn't sure, online tools being what they are, that what I was seeing was for sure what I'd get. Very much appreciated the customer service communication which verified that what I'd designed was what I wanted, and the shipping was quick too.
My mug came in broken but Urban Dictionary replaced it at no extra charge!
Good quality, packaging shipped well, arrived quickly.
this is the best for coffee and hot coco especially if you make the hot coco in it then pour it on your significant other and do body shots 😋🥱
I was really excited to receive this mug and when it did come it was perfect quality. My only complaint is that the color I choose was green teal but it came in yellow.
I can pass away peacefully. This mug is everything I’ve ever needed and more. Fat thank you, Urban Dictionary. <3
Top notch shipping and exactly what I hoped!!
"Turtle on my name". A tribute to the 50 odd years of misheard lyrics.
these mugs are amazing. I can't
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good mug but why does it sometimes say creepy things to me kinda sus ngl
Wowzers
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balls
I just love mugs
High quality finish
This helped me figure out what the word meant when my 35 year old father said he would beat my doonies down. For context I am 12.
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quimsy is my son's name. i find this mug overwhelming. there not man things in my possession that i find as overwhelming as this mug
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