Discuss any three commonly used medical equipment. Trace the history of the equipment and describe its functions. Discuss the body systems for which the equipment is used. Mention at least three healthcare professionals who would work with the equipment.

Agroup of engineering students from purdue university reported that its licking machine, modeled after a human tongue, took an average of 364 licks to get to the center of a tootsie pop. twenty of the group's volunteers assumed the licking challenge-unassisted by machinery-and averaged 252 licks each to the center.