Anterior Root Definition Biology. In many fish the gill openings are posterior to the eyes but anterior to the tail. It conveys motor fibers to skeletal muscle and contains preganglionic autonomic fibers at the thoracolumbar and sacral levels.
Both are illustrated in Figure below. The one of the two roots of a spinal nerve that passes anteriorly from the spinal cord separating the anterior and lateral funiculi and that consists of motor fibers called also anterior root. The seventh character qualifier 0 specifies the anterior approach anterior column.
Near the upper surface toward the back Ventral.
After behind following toward the rear Distal. Sometimes synonymous with anterior dorsal. The root system remains subterranean or underground the soil in the case of vascular plants. For example in a dog the nose is anterior to the eyes and the tail is considered the most posterior part.