an erection
When a muscle contracts, it pulls with a force generated by the muscle fibers contracting and shortening.
it hurts
The muscle responds and pulls on a bone by way of a tendon. It can not react until the nerve tells it to.
Diaphram
shoulder
The muscle responds and pulls on a bone by way of a tendon. It can not react until the nerve tells it to.
you have then stretched your tendon / muscle beyond the normal range .
When one muscle pulls, the other muscle relaxes.
When a muscle gets shorter, it contracts, which generates tension and produces movement. This process occurs through the sliding filament mechanism, where actin and myosin filaments within the muscle fibers slide past each other. As a result, the muscle pulls on bones, facilitating actions such as lifting, walking, or any form of physical activity. Ultimately, muscle shortening is essential for various bodily functions and movements.
no its simply just a strain on your muscle, in which you need to let it heal.
agonists
superior oblique