reticularis

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.

IX. Neurology. 4a. The Hind-brain or Rhombencephalon 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.

IX. Neurology. 4d. Composition and Central Connections of the Spinal Nerves 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.

IX. Neurology. 4a. The Hind-brain or Rhombencephalon 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.

IX. Neurology. 4a. The Hind-brain or Rhombencephalon 1918

They arise from the cells of the gracile and cuneate nuclei, and passing forward through the formatio reticularis, decussate in the middle line.

IX. Neurology. 4a. The Hind-brain or Rhombencephalon 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.

IX. Neurology. 3. The Spinal Cord or Medulla Spinalis 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.

IX. Neurology. 3. The Spinal Cord or Medulla Spinalis 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.

IX. Neurology. 4d. Composition and Central Connections of the Spinal Nerves 1918

Internal and external borders of the membrana reticularis.

Illustrations. Fig. 932 1918

Internal and external borders of the membrana reticularis.

X. The Organs of the Senses and the Common Integument. 1d. 4. The Internal Ear or Labyrinth 1918