Illustration showing the position of the fingers and thumb.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Illustration showing the position of the fingers and thumb. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Illustration showing the position of the fingers and thumb. Wellcome Collection. Source: Wellcome Collection.