There was no bonus item in this version, but during the final challenge, the team could find money bags worth $1,000 each; however, the team could only keep the additional money if they completed the task and returned to the Hellevator in time. In this version of the Labyrinth, there was a total of $25,000 available.
Lab #9: Muscle Physiology p.3 Muscle Twitch Parameters A twitch is a muscle contraction that occurs in response to a single, rapid stimulus that evokes a single, isolated action potential in a muscle fiber.
Updated April 05, 2016. Muscle contractions (also known as muscle fiber activations) occur when a muscle fiber or group of fibers is signaled by the brain via nerves to activate and increase the tension within the muscle.