Plants or animals, but usually plants, such as cotton, hemp, linen, etc. Natural fibres from animals include, wool, leather and silk.
Non-natural fibres are man-made, such as toothbrush fibres, or polyester cloth made from plastic-type products (which are derived from oil).
Examples: natural silk, cotton, jute, cannabis, etc.
Some examples of synthetic fibers: nylon, viscose, polyesteric fibers, carbon fibers, etc.
See also the link below.
Natural fiber is used to make rope, baskets, furniture (Rattan), caned chairs, thatched roofs, macrame items, to name several examples.
The sympathetic motor neurons come from the thoracic through the lumbar region of the spinal cord.
Andrenergic fibers release Norepinephrine and Cholinergic fibers release Acetylcholine.
Collagenous fibers, Elastic fibers, and Reticular fibers
You have three types of muscle fibers. 1) Skeletal muscle fibers. 2) Cardiac muscle fibers. 3) Smooth muscle fibers.
Sacral outflow refers to the nerve fibers that originate from the sacral region of the spinal cord. These nerve fibers innervate various structures in the pelvis, including the bladder, uterus, and rectum. They are responsible for controlling the functions of these organs, such as emptying the bladder and contracting the muscles of the uterus during childbirth.
The plant
reticular formation
Thoracic and lumbar regions
Microtubules and kinetochore fibers move the chromosomes in mitosis and meiosis, though they are not referred to as organelles. Though you could say that the fibers originate from the centrioles, which are a part of the centrosome.
Spindle fibers are composed of a protein called myosin and originate from a cell organelle called the centriole
The sympathetic motor neurons come from the thoracic through the lumbar region of the spinal cord.
sympathetic chain ganglia
Spindle Fibers
Just a guess but the fibers in clothing. ( cotton fibers, polyester fibers, etc)
The fibers which are made by man are the synthetic fibers.
Andrenergic fibers release Norepinephrine and Cholinergic fibers release Acetylcholine.
Synthetic Fibers Manufactured Fibers