Test 4 Part 2

Question 1

Where does spinal cord start?

Answer 1

Foramen magnum

Question 2

Where does spinal cord end?

Answer 2

L1-L2

or in child more L2-L3

Question 3

How many SC segments with spinal nerves?

Answer 3

31 segments with 31 pairs of spinal nerves

Question 4

How many pairs spinal nerves in each segment of spinal cord?

Answer 4

8 cervical
12 thoracic
5 lumbar
5sacral
1 coccygeal

Question 5

Dorsal root function?

Answer 5

sensory

Question 6

Ventral root function?

Answer 6

motor

Question 7

Dorsal and ventral primary rami function?

Answer 7

both are mixed sensory and motor

Question 8

Sympathetic nervous system function

Answer 8

motor

Question 9

pre/post ganglionic sympathetic function?

Answer 9

motor

Question 10

Ventral Primary Rami Plexi

Answer 10

Cervical C1-C4 (and part of C5)
Brachial C5-T1
Lumbosacral L1-S4 (t-12 in 50% people)
Coccygeal S4 & S5

Question 11

Adult spinal cord length

Answer 11

about 2ft
58-60 cm
23-24 inches

Question 12

How long is vertebral column?

Answer 12

about 2.5ft

Question 13

What level is Tuffier’s (Intercristal) line?

Answer 13

L4

Question 14

How is dura matter secured to pia mater?

Answer 14

Denticulate ligaments

Question 15

How many denticulate liagments?

Answer 15

21 pairs

Question 16

Subarachnoid space

Answer 16

continous with subarchnoid space in brain
this is also called “Inter thecal”

contains CSF

Question 17

Subdural space

Answer 17

potential space

Question 18

Epidural space

Answer 18

Real space
contains fat
contains ant/post venous plexi

Question 19

How far do spinal cord meninges continue laterally?

Answer 19

all the way to the spinal nerves.

Thus, anesthesia of this area would affect both motor and sensory function

Question 20

What comes from lateral gray horn in T1-L2-3 region?

Answer 20

neuron cell bodies that originate sympathetic pre-ganglionic

Question 21

T1-L2-3

Answer 21

sympathetic pre-ganglionic

Question 22

What comes from lateral gray horn in S2-S4 region?

Answer 22

neuron cell bodies that originate pelvic parasympathetic pre ganglionic

Question 23

Another word for white column?

Answer 23

Funiculus

Question 24

Where do dorsal intermediate sulci start?

Answer 24

about T8-C1

Question 25

What do fibers medial to dorsal intermediate sulci carry?

Answer 25

propreoceptive and tactile info from lower extremities and lower trunk

Question 26

what do fibers lateral to dorsal intermediate sulci carry?

Answer 26

propreoceptive and tactile info from upper half of the body