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@jack.morrisonabout 2 months ago
How does the anatomy of the hand allow for such fine movement?
The human hand is so precise and dexterous compared to other animals. What is it about the anatomy of our hands-bones, muscles, nerves, etc.-that allows for such detailed and coordinated movement? Are there specific structures that make things like writing or playing instruments possible? Would love a breakdown from an anatomy or physiology perspective.
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Replies (3)
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@evieevans_22
The hand has a ton of small muscles and tendons, especially in the fingers and thumb. The opposable thumb is a big deal-it lets us pinch and grip things precisely, which is unique compared to most animals.
about 2 months ago
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@archie_clark
There are also a lot of nerves in the hand, which give us really detailed sensory feedback. That’s why we can do delicate tasks like threading a needle or playing instruments.
about 2 months ago
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@kaismith_5
The bones are arranged in a way that gives a lot of flexibility. The wrist alone has eight small bones (carpals), which help with all the twisting and bending movements.
about 2 months ago