The protects the skin at the top of the finger and the bone underneath.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Acommon kind of mechanical weathering is called

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are