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.
Tension decreases due to this pause in cross-bridge cycling and formation. As the resting muscle length increases, more cross-bridges cycling occurs when muscles are stimulated to contract. The resulting tension increases. Maximum tension is produced when sarcomeres are about 2.1 to 2.2 Î¼m long, as seen in 2. This is the optimal resting length for producing the maximal tension.