substantia gelatinosa

Substantia gelatinosa is a structure involved in pain transmission.

These fibers are intimately related to the substantia gelatinosa which is probably the terminal nucleus.

The Nucleus proprius is a layer of the spinal cord adjacent to the substantia gelatinosa.

It should not be confused with the Substantia gelatinosa of Rolando, which is located more dorsally.

Substantia gelatinosa can refer to:

The large synaptic complexes of the substantia gelatinosa (with János Szentágothai, 1969)

Preterminal and terminal axon arborizations in the substantia gelatinosa of cat's spinal cord (1977)

The substantia gelatinosa is one point (the nucleus proprius being the other) where first order neurons of the spinothalamic tract synapse.

Its primary neurons axons enter the spinal cord and then ascend one to two levels before synapsing in the substantia gelatinosa.

Substantia gelatinosa (Lamina II)

C fibers synapse to second-order projection neurons in the spinal cord at the upper laminae of the dorsal horn in the substantia gelatinosa.

Therapies such as cognitive training and coping strategies descended from the air of witchcraft to something solid if jelly-like - the substantia gelatinosa of the spinal cord.

However, some A delta fibers (carrying fast, localized pain sensation) also terminate in the substantia gelatinosa, mostly via axons passing through the area of the nucleus proprius.

Slow pain is transmitted via slower type C fibers to laminae II and III of the dorsal horns, together known as the substantia gelatinosa.

Substantia gelatinosa of Rolando (usually what is meant when "Substantia gelatinosa" is used by itself)

A-delta and C fibers synapse on second order neurons in substantia gelatinosa (laminae II and III of the dorsal horns).

The μ-receptors exist mostly presynaptically in the periaqueductal gray region, and in the superficial dorsal horn of the spinal cord (specifically the substantia gelatinosa of Rolando).

Laminae III and IV are located ventral to the substantia gelatinosa and contain neurons that receive monosynaptic input from Aβ fibers.

The non-myelinated fibers ascend or descend for short distances not exceeding one or two segments, but most of them enter the substantia gelatinosa at or near the level of their origin.

It is filled with cerebrospinal fluid, and lined by ciliated, columnar epithelium, outside of which is an encircling band of gelatinous substance, the substantia gelatinosa centralis (or central gelatinous substance of spinal cord).

Nociceptive neurons are mostly located in the superficial dorsal horn, in the marginal layer (lamina I) and in the substantia gelatinosa (lamina II), and receive direct synaptic input from Aδ and C fibers.

Pseudounipolar neurons in the dorsal root ganglion have axons that lead from the skin into the dorsal spinal cord where they ascend or descend one or two vertebral levels via Lissauer's tract and then synapse with secondary neurons in either the substantia gelatinosa or the nucleus proprius.