What is the term for the ability of cardiac muscle fibers to shorten in response to an electrical stimulus?

The MOST common temporary fire protection are:

A) standpipes with outlets. B) portable fire extinguishers. C) sprinkler systems. D) uncharged fire hoses connected to hydrants on the ground.

________ is used as an assistant in endoscopic procedures. It holds and moves the endoscope under the direction of the surgeon.

A) HIPDOC B) ROBODOC C) AESOP D) ZEUS