Question

If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs. This addition of one twitch to another is called If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs. This addition of one twitch to another is called recruitment. complete tetanus. wave summation. treppe. incomplete tetanus.

Answer 1

Answer:

The correct answer is - wave summation.

Explanation:

Wave summation or temporal summation is a physiological process or phenomenon that takes place when the previous relaxation phase has not complete and another stimulus is applied to a muscle which leads to a stronger contraction to the muscle.

Such a condition occurs due to a smaller refractory period than the contraction and relaxation phases. As the previous contraction effects are stiil present in the muscle the next stimulus and contraction leads to a much stronger contraction than previous.