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Flashcards in Section 4 Notes Deck (49)
1

definition of myotome

the muscles that receive their motor innervation from a given spinal n. (dermatome is a sensory region of the skin that is innervated by a spinal n.)

2

spinal levels of lumbar plexus

l1-l4

3

what is innvervated by lumbar plexus

skin and muscles of the 1. lower abdominal wall in inguinal region 2. anterior and medial parts of the thigh

4

spinal levels of the lumbosacral plexus

l4-s4

5

what is innervated by the lumbosacral plexus

1. gluteal region 2. posterior compartment of the thigh 3. all of the leg and foot

6

For the _____ region of the spinal cord, the spinal levels or spinal segments correspond with the corresponding vertebral level.

cervical

7

The spinal cord ends at the level of the ____ vertebra.

first lumbar

8

tthe cauda equina are the ____ below the level of the spinal cord

dorsal and ventral roots

9

the radial nerve is important for extension of  ____

all joints in the arm and hand

10

_____ nerve is important for the thumb side of the hand and wrist (on the palmar side up)

median

11

peripheral mononeuropathy

injuries to an INDIVIDUAL PERIPHERAL NERVE arising directly from the plexus. (can be COMPLETE or INCOMPLETE)

12

radiculopathies involve a lesion to the

spinal nerve, a dorsal, or a ventral root.

13

A _________ is often associated with burning or tingling pain radiating down a limb in the dermatome of the affected nerve root.

radiculopathy

14

The straight-leg-raising test is often helpful for diagnosis of nerve root compression in the ____ region

lumbosacral

15

C5 X - decreased reflex in the ____

biceps

16

C6 X - decreased reflex in the ____

biceps, bracioradialis

17

C7 X - decreased reflex in the ____

triceps

18

C5 compression the disk involved is

c4-c5

19

C6 compression the disk involved is

c5-c6

20

C5 X - main weakness is in the

deltoid infraspinatus biceps

21

C6 X - main weakness is in the

wrist extensors biceps

22

C7 X - main weakness is in the

triceps

23

L1 X - main weakness is in the

illiopsoas psoas hip flexion

24

L2-L3 X - main weakness is in the

adduction of the thigh

25

L4 X - main weakness is in the

tibialis anterior and posterior foot inversion

26

L5 X - main weakness is in the

foot dorsiflexion hip abduction heel walk

27

S1 X - main weakness is in the

foot plantar flexion tip to walk

28

Decreased patellar (knee jerk reflex) is caused by ___ compression

l2-l3

29

decreased achilles tendon (ankle jerk) is caused by ___ compression

s1

30

the white or gray matter is centered in the spinal cord?

gray (the H)

31

the intermediate zone of the spinal cord is composed of

sensory and mtoor functions

32

larger more myelinated axons enter medially or laterally?

medially

33

axons that carry _____ information enter the SC medially

epicritic

34

axons that carry _____ information enter the SC laterally

nociceptive and temperature

35

some small diamters axons pass through a few spinal segments via the _____, prior to synapsing in the dorsal horn.

lissauers tract

36

damage to a nerve root may not cause complete paralysis because?

multiple nerve roots may innervate a single muscle (damage to a PERIPHERAL NERVE can cause completely paralysis

37

Paresis means nerve root X or peripheral nerve X?

nerve root

38

The amount of ____ matter is greatest in regions that innervate the limbs.

gray

39

as you ____ the spinal cord, the amount of white matter increases

ascend rostrally

40

where is the intermediolateral cell column found?

in the thoracic spinal cord (from T1-L2)

41

where is clarkes nucleus found?

in the thoracic spinal cord (From T1-L2)

42

The neurons of Clarke’s nucleus are the origin of the ____ tract.

dorsal spinocerebellar

43

posterior or dorsal funiculus carries ___ information

epicrtici

44

Corticospinal axons originating from neurons in the motor cortex terminate particularly in the more ____ portions of the intermediate gray, 

lateral

45

Corticospinal axons from sensory cortex terminate in the ____

dorsal horn 

46

 ventral or anterior corticospinal tract. The axons from this pathway terminate____

 bilaterally in the intermediate gray 

47

lateral corticospinal tract is more concerned with ____

discete individual digit mvoements and distal motor control

48

anterior/ventral corticospinal tract is more concerned with ____

proximal muscle movementds

49