Rexed Laminae Quiz Flashcards
It forms a thin cap over the dorsal horn
Lamina I
Approximate position of an important pain reception center called the Substantia Gelatinosa
Lamina II
Lamina II is an important ____ ____ region
pain receptor
Much of this area is filled with a group of cell bodies called the Nucleus Proprius
Lamina III, IV
Sensory modality synapse (touch, pressure, tickle)
Lamina III, IV
Which lamina has on the lateral edge of it cell bodies known as the reticular formation? & where is this region found?
Lamina V, cervical region only
This Lamina is missing at some cord levels?
Lamina VI
This lamina is the most anterior aspect of dorsal horn
Lamina VI
Lamina VII is in the ____ ____ ____
intermediate gray area. (Lateral horn)
Many descending tract fibers synapse with neurons in this lamina?
Lamina VII
The nucleus dorsalis is also known as what?
Clarke’s Nucleus or Column
Clarkes Nucleus extends like a column from cord level ___ down thru ___.
C8, L3
The nucleus dorsalis contributes most axons to a famous ascending faciculus called the what?
Posterior Spinocerebellar tract
This column-like nucleus forms the bulk of the lateral horn cell bodies throm T1 thru T12
Intermediolateral nucleus
The intermediolateral nucleus appears, but without a distinct horn at cord levels ____ and _____
L1,2 & S2,3,4
Intermediolateral nucleus are the autonomic motor neurons known as ____ and ____
preganglionic sympathetic neurons (T1-L2) and preganglionic parasympathetics neurons (S2,3,4)
The intermediolateral nucleus at S2,3,4 is often called the what?
Sacral Parasympathetic Nucleus
This lamina is found on medial aspect of anterior horn
Lamina VIII
Most of the body’s skeletal muscles are motor intervated from neurons in this lamina
lamina IX
This lamina is the reason the ventral horn is called the “somatic motor horn”
lamina IX
Class A alpha motor neurons are abundant here
Lamina IX
This is the largest, fastest, conducting motor neurons
lamina IX
This lamina surronds the central canal
Lamina X
Lamina X contains the ____ and _____
anterior and posterior “gray commissures”
This lamina forms the bridge, connecting gray mater together
Lamina X
