An era is a commonly used word for a long period of time. When used in science, for example geology, an era denotes a clearly defined period of time of arbitrary but well-defined length, such as for example the Mesozoic Era from 252 Maâ66 Ma, delimited by a start event and an end event.
As you increase voltage to the muscle describe how it responds to the increased stimulus. As the voltage was increased from threshold to maximum voltage, there was a greater force in the muscle contraction. Once the maximum voltage (2500 mv) was reached, even if there was an increase in voltage, the force of the muscle contraction remained the same.
Aim: To determine what happens to the force of a muscle contraction as the muscle is stretched. 1 Stimulate the muscle with a pulse pattern of N=4 with a frequency of 1Hz, using a voltage determined in exercise 1 that will produce a contraction.Mark a contraction as â0mmâ. 2 Use the adjusters on the ring stand to stretch the muscle 1mm using a handheld ruler and stimulate it as before.keletal muscle is intimately associated with the skeletal system and, combined, these muscles and bones are responsible for supporting and moving the body. While all skeletal muscle fibers (cells) have sarcomeres and the same banded appearance, different muscles can contract in different ways.