A muscle fiber that is small, within each muscle spindle 2 to 12 are located within them. The intrafusal fibers are sensitive to muscle tension and stretching and the stretch receptors which they are connected to.
A muscle fiber that is small, within each muscle spindle 2 to 12 are located within them. The intrafusal fibers are sensitive to muscle tension and stretching and the stretch receptors which they are connected to.