Thumbs why we need them

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Of all the motions the hand can perform, perhaps none is so distinctively human as a punch in the nose. Other animals bite, claw, butt or stomp one another, but only the species that includes Muhammad Ali folds its hands into a fist to perform the quintessential act of intra-species male-on-male aggression. David Carrier, an evolutionary biologist at the University of Utah, believes our key advantage is the dexterity and configuration of our thumb, which folds over the second and third fingers as a buttress, concentrating the striking power and protecting the delicate hand bones.

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In this weekly series, Life's Little Mysteries provides expert answers to challenging questions. As incredible as our hands are — capable of everything from threading needles to splitting wooden boards — there's no telling whether they are just right, or merely good enough. Evolutionary biologists don't quite know why humans, and the vast majority of four-limbed earthlings, have five digits per limb.

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The human body is an amazing thing. For each one of us, it's the most intimate object we know. And yet most of us don't know enough about it: its features, functions, quirks, and mysteries.

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How many fingers do you have? Your answer might depend on whether you consider your thumb to be a finger. Grammarly can save you from misspellings, grammatical and punctuation mistakes, and other writing issues on all your favorite websites. Your writing, at its best.

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First things first: if your thumb joint is swollen, hot, and inflamed you should seek medical care immediatelyas this could be a sign of a severe infection. In a normally functioning hand, tendons run through sheaths or pulleys to the fingers to make them bend. With trigger thumb, medically known as stenosing tenosynovitisthe tendon sheaths a tunnel-like structure that holds the tendon to the bone become inflamed and thickened, making it difficult for the tendon to smoothly glide through the sheath to bend the affected finger.

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I didn't know there was anything unusual about my hands until I was in sixth grade, sitting on the bus to an away game with the rest of the cheerleading squad. I rested my hand on the back of an eighth grader's seat, which is when she noticed my thumb. You have the same weird thumbs I do," she exclaimed.

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Researchers in Geneva have found out why a human hand consists of four fingers and a thumb, rather than five fingers. The discovery is an important step towards understanding how humans evolved and could help explain why some people are born with malformed digits. Their aim was to find out why hands develop asymmetrically, with a thumb instead of a fifth finger.

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Ahh, busy season. You need to look in the mirror. As I pointed out in my last article, Adopting a Ritz Carlton mentalityour firm has a policy that you can only point at people with your thumb, not with your index finger. Too many CPAs forget that clients hire them to take a burdensome task off their hands and to make their lives easier.

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A few years ago, my teenage daughter announced that she had a malformation of her hands. I had previously noticed that that her thumbs were small and stubby with shortened nails, although I never considered that a malformation. BDD is completely harmless and even provides unexpected benefits in keyboard typing, video gaming, piano playing, and thumb-war battling.

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Pain in your thumb can be caused by several underlying health conditions. Treatment for thumb pain will depend on the cause, but generally, pain-relieving medication or physical therapy are the go-to solutions. In some cases, consistent pain in your thumb can be an indication that you need surgery or treatment for another underlying health condition, such as arthritis.

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