People often talk about how many bones there are in your feet: 26 bones in each foot, 25% of your bodyâs bones are found in your feet, etc., etc. But your foot isnât just a bag of bonesâthere are muscles in those feet, and they can get injured, too. For example, thereâs your abductor hallucis muscle.he abductor hallucis muscle! This nifty little muscle starts at your calcaneous, or heel bone, runs along the arch, and then slides into the side of your big toe. It helps you move and flex your big toe, and holds up the arch of your foot.
Datum definition, a single piece of information, as a fact, statistic, or code; an item of data. See more.
Refer to the section on the Earthâs coordinate system. Because there are different ways to fit the mathematical model to the surface of the Earth, there are many different datums. Also, in the modern digital era, techniques have vastly improved and many modern datum are very similar to each other.