The formatio reticularis presents a different appearance in the anterior district from what it does in the lateral; in the former, there is an almost entire absence of nerve cells, and hence this part is known as the reticularis alba; whereas in the lateral district nerve cells are numerous, and as a consequence it presents a gray appearance, and is termed the reticularis grisea. ❋ Unknown (1918)
The medial fillet passes upward in the ventral part of the formatio reticularis through the medulla oblongata, pons and mid-brain to the principal sensory nucleus of the ventro-lateral region of the thalamus. ❋ Unknown (1918)
The fibers of the rubrospinal tract (bundle of Monakow) arise in the red nucleus, cross the midline in the decussation of Forel and pass downward in the formatio reticularis of the brainstem into the lateral funiculus of the spinal cord ventral to the crossed pyramidal tract. ❋ Unknown (1918)
The rest of the dorsal part of the pons is a continuation upward of the formatio reticularis of the medulla oblongata, and, like it, presents the appearance of a network, in the meshes of which are numerous nerve cells. ❋ Unknown (1918)
Many of the fibers which arise from the terminal sensory nuclei of the cranial nerves pass upward in the formatio reticularis as a separate bundle, known as the central tract of the cranial nerves, to the thalamus. ❋ Unknown (1918)
In the substance of the formatio reticularis are two small nuclei of gray matter: one, the inferior central nucleus (nucleus of Roller), near the dorsal aspect of the hilus of the inferior olivary nucleus; the other, the nucleus lateralis, between the olive and the spinal tract of the trigeminal nerve. ❋ Unknown (1918)
Formatio reticularis, with 3, its internal part (reticularis alba), and 3, its external part (reticularis grisea). ❋ Unknown (1918)
These form a column which is best marked where the lateral gray column is differentiated, viz., in the thoracic region; 115 but it can be traced throughout the entire length of the medulla spinalis in the form of groups of small cells which are situated in the anterior part of the formatio reticularis. ❋ Unknown (1918)
On reaching the medulla these fibers continue upward through the formatio reticularis in the neighborhood of the median fillet to the thalamus, probably its ventro-lateral region. ❋ Unknown (1918)
The longitudinal fibers in the reticularis grisea are derived from the lateral funiculus of the medulla spinalis after the lateral cerebrospinal fasciculus has passed over to the opposite side, and the dorsal spinocerebellar fasciculus has entered the inferior peduncle. ❋ Unknown (1918)
In the reticularis alba the longitudinal fibers form two well-defined fasciculi, viz.: (1) the lemniscus, which lies close to the raphé, immediately behind the fibers of the pyramid; and (2) the medial longitudinal fasciculus, which is continued upward from the anterior and lateral proper fasciculi of the medulla spinalis, and, in the upper part of the medulla oblongata, lies between the lemniscus and the gray substance of the rhomboid fossa. ❋ Unknown (1918)
The fibers cross the raphé of the mid-brain in the decussation of Forel and descend in the formatio reticularis of the pons and medulla dorsal to the medial lemniscus and as they pass into the spinal cord come to lie in a position ventral to the crossed pyramidal tracts in the lateral funiculus. ❋ Unknown (1918)
They arise from the cells of the gracile and cuneate nuclei, and passing forward through the formatio reticularis, decussate in the middle line. ❋ Unknown (1918)
Dorsally, it is partly separated from the gray substance of the quadrigeminal bodies by the fibers of the lemniscus; ventral to it are the medial longitudinal fasciculus, and the formatio reticularis of the tegmentum. ❋ Unknown (1918)
Between the anterior and posterior columns the gray substance extends as a series of processes into the lateral funiculus, to form a net-work called the formatio reticularis. ❋ Unknown (1918)
Its large multipolar cells are like those in the anterior column of the cord; they form a slender column in the deep part of the formatio reticularis grisea about midway between the dorsal accessory olive and the nucleus of the spinal tract of the trigeminal. ❋ Unknown (1918)
Internal and external borders of the membrana reticularis. ❋ Unknown (1918)
The transverse fibers of the formatio reticularis are the arcuate fibers already described (page 782). ❋ Unknown (1918)
