Pneumatic artificial muscles conventional electric motors and hydraulic cylinders. Pneumatic artificial muscles Pneumatic artificial muscles (PAMs) are contractile or extensional devices operated by pressurized air filling a pneumatic bladder. In an approximation of human muscles, PAMs are usually grouped in pairs: one agonist and one antagonist. PAMs were first developed (under the name of "McKibben Artificial Muscles") in the 1950s for use in artificial limbs. The Bridgestone rubber company (Japan) commercialized the idea in the 1980s under the name of Rubbertuators. The retraction strength of the PAM is limited by the sum total strength of individual fibers in the woven shell. The exertion
Murder for body parts cadavers. These rumors are hard to substantiate, and may reflect continued, deep-held fears of the use of cadavers as commodities. Murder for body parts The murder of human beings for their body parts is a crime in all countries. Such practices have been confirmed or suspected to occur within a handful of contexts. Medicine murder (not to be confused with "medical murder" due to medical negligence) means the killing of a human being in order to excise body parts to use as medicine or for magical purposes in witchcraft. Medicine murder is not viewed as a form of human sacrifice