Exam 2 Rexed Laminae

Question 1

Thin cap over posterior horn

Answer 1

Lamina I

Question 2

Pain receptor

Answer 2

Lamina II

Question 3

Substantia Gelatinosa

Answer 3

Lamina II

Question 4

Grouped together and named the Nucleus proprius

Answer 4

Lamina III, IV

Question 5

• Posterior horn

- Relay for sensory info. such as touch, pressure

Answer 5

Lamina III, IV

Question 6

Found in cervical area only

Answer 6

Lamina V

Question 7

Complex of fibers & cell bodies known as the “formation reticularis”

Answer 7

Lamina V

Question 8

Find cell bodies that send axons to the contralateral spinothalamic tracts

Answer 8

Lamina V

Question 9

Missing at some cord levels

Answer 9

Lamina VI

Question 10

Intermediate gray area

Answer 10

Lamina VII

Question 11

Between the anterior & posterior horn

Answer 11

Lamina VII

Question 12

T1- L2 & S2 - S4 - preganflionic parasympathic

Answer 12

Lamina VII

Question 13

Many descending tract fibers

Answer 13

Lamina VII

Question 14

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

Answer 14

Lamina VII

Question 15

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

Answer 15

Lamina VII

Question 16

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

Answer 16

Lamina VII

Question 17

Medial aspect of anterior horn

Find cell bodies of delta & gamma motor neurons

Answer 17

Lamina VIII

Question 18

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

Answer 18

Lamina IX

Question 19

Class A alpha motor neurons

Answer 19

Lamina IX

Question 20

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

Answer 20

Lamina X