Question

What part of the muscular system helps you get up out of a chair?

Answer 1

The muscular system has three main tasks--locomotion (or movement), postural support against gravity, and fine movements like precise manipulation of objects with fingers or picking just one grape from a bunch at a time. When you push down on something to lift yourself up off the ground, this would be what we call a "positive" or "concentric" movement. This is when the energy in our muscles is being used to move us from where we are to somewhere else. The skeletal muscles in your lower back and pelvic area contract by shortening their fibres, which attaches them closer to the pelvis bone that connects with the chair. So, when you have finally pushed yourself up into that standing position, then these muscles have just done what they're designed to do!