Fibril

Fibril is a fine fiber, such as a myofibril or neurofibril. Neurofilaments are about 10 nanometers in diameter. Cytoplasmic fibrils are observed on the protoplasmic cylinders found in most spirochetal species, although no function of the cytoplasmic fibrils has been ascribed. Insect flight muscle is said to be fibrillar, in that it contracts in response to being stretched by antagonistic muscle, so as to allow very rapid (up to 1000 Hz) contraction.

Fibril

Fibril is a fine fiber, such as a myofibril or neurofibril. Neurofilaments are about 10 nanometers in diameter. Cytoplasmic fibrils are observed on the protoplasmic cylinders found in most spirochetal species, although no function of the cytoplasmic fibrils has been ascribed. Insect flight muscle is said to be fibrillar, in that it contracts in response to being stretched by antagonistic muscle, so as to allow very rapid (up to 1000 Hz) contraction.