A smooth, sustained contraction, with no evidence of relaxation, is called Aused, or complete, tetanus B twitch C) unfused, or incomplete, tetanus D) summing of contractions

Aused, or complete, tetanus is like a rock concert for your muscles – it’s when the contractions lock in and keep going strong without taking a breather. This continuous state can happen when you stimulate the muscle fibers at a high frequency, meaning no relaxation phase between the contractions. The result? A powerful, sustained output of force, perfect for Olympic weightlifting or sprinting away from a bear! On the flip side, have you ever noticed your hand shake while holding something heavy for too long? That’s unfused, or incomplete, tetanus! It’s like your muscles are saying, “I can’t keep this up forever, but I’m gonna try!” This happens when the nerve stimulus hits the muscle fibers at a frequency that allows for some relaxation. It’s a good reminder that even our muscles have their limits!