If muscles are made of cells, how do parts of a cell move?

Question

If muscles are made of cells, how do parts of a cell move?

In: Biology

Answer 1

Muscle cells can be visualized as long tubes with a string running through them. The tube is attached on one end. The string is attached somewhere else. The inside of the tube has “hairs” on it. When the muscle contracts, it pulls the string into the tube by bending those hairs to drag it in. This reduces the length of the muscle. When the muscle relaxes, the hairs let go.