Exam 2 Rexed Laminae Flashcards Preview

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Flashcards in Exam 2 Rexed Laminae Deck (20):
1

Thin cap over posterior horn

Lamina I

2

Pain receptor

Lamina II

3

Substantia Gelatinosa

Lamina II

4

Grouped together and named the Nucleus proprius

Lamina III, IV

5

- Posterior horn
- Relay for sensory info. such as touch, pressure

Lamina III, IV

6

Found in cervical area only

Lamina V

7

Complex of fibers & cell bodies known as the "formation reticularis"

Lamina V

8

Find cell bodies that send axons to the contralateral spinothalamic tracts

Lamina V

9

Missing at some cord levels

Lamina VI

10

Intermediate gray area

Lamina VII

11

Between the anterior & posterior horn

Lamina VII

12

T1- L2 & S2 - S4 - preganflionic parasympathic

Lamina VII

13

Many descending tract fibers

Lamina VII

14

Nucleus dorsalis (Clarke's nucleus or column)
- extends from cord level C8 - L3

Lamina VII

15

Cell bodies contribute most axons to ascending fasciculus called "posterior spinocerebellar tract"

Lamina VII

16

Cell bodies axons extend into the ipsilateral posterior spinocerebellar
- Intermediolateral nucleus

Lamina VII

17

Medial aspect of anterior horn
Find cell bodies of delta & gamma motor neurons

Lamina VIII

18

Most of the body's skeletal muscles are motor innervated from neurons in this lamina

Lamina IX

19

Class A alpha motor neurons

Lamina IX

20

Surrounds central canal & contains the anterior & posterior "gray commissures"
Creates the bridge

Lamina X