Chapter 14: Spinal Nerves Flashcards Preview

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Flashcards in Chapter 14: Spinal Nerves Deck (70):
1

how many pairs of spinal nerves

31

2

how many cervical nerve pairs

8

3

how many thoracic nerve pairs

12

4

how many lumbar nerve pairs

5

5

how many sacral nerve pairs

5

6

how many coccygeal nerve pairs

1

7

these are formed by merging two nerve roots together

spinal nerves

8

this contains motor axons from the ventral and lateral horn

ventral root

9

these contain sensory axons that enter into the dorsal horn

dorsal root

10

sensory is located in

dorsal root

11

motor is located in

ventral root

12

these contain cell bodies of the sensory neurons

dorsal root ganglia

13

define mixed nerve

contains motor and sensory axons

14

where do spinal nerves flow out

intervertebral foramen between adjacent vertebraes

15

The spinal nerves split into two

rami

16

what are the two rami of the spinal nerves

dorsal rami and ventral rami

17

what does the dorsal rami do

hold the motor and sensory nerves for the posterior trunk and back

18

what does the ventral rami do

hold motor and sensory information for the anterior and lateral trunk and extremities

19

these carry autonomic impulses to and from ganglion

rami communicants

20

these are bundles of axon fascicles with connective tissue covering

peripheral nerves

21

this connective tissue covers the individual axon

endoneurium

22

this connective tissue covers the fasicles of the nerve

perineurium

23

this connective tissue covers the whole nerve

epineurium

24

define plexus

ventral rami in the cervical, lumbar, and sacral spinal nerves that connect to make a network

25

define the intercostal nerves

connection of ventral rami of thoracic spinal nerves

26

this is where axons from a ventral rami will split and join with axons from other adjacent ventral rami

plexus

27

what are plexus named for

their general region and their pathway

28

name the four plexuses

cervical, brachial, lumbar, and sacral

29

name the nerve in the cervical plexus

phrenic nerve

30

the nerves of the cervial plexus

C1-C4

31

where does the cervical plexus supply nerves to?

skin and muscles of neck

32

the nerves of the phrenic nerve

C3-C5 (help you stay alive)

33

these motor nerves of the phrenic nerve innervate at the

diaphram

34

what spinal n erves make the brachial plexus

C5-T1

35

where do the brachial plexus supply nerves to?

skin and muscles of upper extremities

36

name some nerves of the brachial plexus

musculocutaneous nerve, median, ulnar, axillary, and radial nerve

37

the motor nerves of the musculocutaneous nerve influence what part of the body

anterior upper arm

38

the sensory nerves of the musculocutaneous nerve influence what part of the body

lateral forearm

39

the motor nerves of the medial nerve influence what part of the body

anterior forearm and anterior and lateral hand

40

the sensory nerves of the medial nerve influence what part of the body

the anterior and lateral hand

41

the motor nerves of the ulnar nerve influence what part of the body

anterior forearm and anterior hand

42

the sensory nerves of the ulnar nerve influence what part of the body

medial, posterior, and anterior hand

43

the motor nerves of the axillary nerve influences what part of the body

deltoid and teres minor

44

the sensory nerves of the axillary nerve influence what part of the body

shoulder

45

the motor nerves of the radial nerve influece what part of the body

posterior arm, posterior forearm, posterior hand

46

the sensory nerves of the radial nerve influence what part of the body

posterior arm, posterior forearm, posterior and lateral hand

47

where is the lumbar plexus

L1-L4

48

the lumbar plexus supplies nerves to what area of the body

pelvic girdle and lower extremities

49

name two nerves of the lumbar plexus

femoral nerve and obturator nerve

50

the motor nerve of the femoral nerve influences what part of the body

anterior hip and thigh

51

the sensory nerves of the femoral nerve influence what area of the body

anterior thigh, medial lower leg, medial foot

52

the motor nerves of the obturator nerve influence what area of the body

medial thigh

53

the sensory nerves of the obturator nerve influence what area of teh body

medial thigh

54

what nerves for the spinal nerves

L4-S4

55

the sacral plexus supplies muscles to what part of the body

muscles and skin of lower extremities

56

the sciatic nerve split into what other nerves

tibial and common fibular

57

the common fibular nerve splits into what two nerves

superficial and deep fibular nerve

58

The sciatic Nerve is specifically just ______ functions of the ______

motor of posterior thigh

59

the motor nerves of the tibial nerve influence this part of the body

posterior lower leg

60

the sensory nerves of the tibial nerve influence this part of the body

posterior lower leg and plantar surface

61

the motor nerves of the superficial fibular nerves influence what part of the body

lateral lower leg

62

the sensory nerves of the superficial fibular nerve influence what part of the body

lateral lower leg

63

the motor nerves of the deep fibular nerve influence this part of the body

anterior lower leg

64

the sensory nerves of the deep fibular nerve influence this part of the body

anterior lower leg and dorsal surface of the foot

65

what is the pathway of nerve impulses that produce reflexes

reflex arc

66

name the parts of the reflex arc

sensory receptor, sensory neuron, inegrating center, motor neuron, and effector

67

what is the effector

response to impulse

68

what is the motor neuron

carrys the impulse from the CNS to affector

69

what is the sensory neuron

carrys the impulse from the receptor to CNS

70

what responds to stimuli in the reflex arc

sensory receptor