The ability to exert force is a good way to define flexibility. The ability to work a muscle for an extended period of time. At various joints, the range of motion is available.
The most important function of the palmar interossei is the closing of spread fingers which means the movement of the fingers towards the middle finger(adduction in the metacarpophalangeal joints [MCP]).
Alright the way you can get permission to a copyrighted online source seems like a mystery. But when we think about it all we have to do is cite who made the source and what corporation made it.
BTW to learn how to cite your sources all you have to do is research about. Once you memorize the citing then it is straight forward! Good Luck :D.
Drugs lead to high risk behaviors and high risk behavior is a sign of drug use