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HSS305 Anatomy > Chapter 14: Spinal Nerves > Flashcards

Chapter 14: Spinal Nerves Flashcards

1
Q

how many pairs of spinal nerves

A

31

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2
Q

how many cervical nerve pairs

A

8

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3
Q

how many thoracic nerve pairs

A

12

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4
Q

how many lumbar nerve pairs

A

5

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5
Q

how many sacral nerve pairs

A

5

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6
Q

how many coccygeal nerve pairs

A

1

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7
Q

these are formed by merging two nerve roots together

A

spinal nerves

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8
Q

this contains motor axons from the ventral and lateral horn

A

ventral root

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9
Q

these contain sensory axons that enter into the dorsal horn

A

dorsal root

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10
Q

sensory is located in

A

dorsal root

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11
Q

motor is located in

A

ventral root

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12
Q

these contain cell bodies of the sensory neurons

A

dorsal root ganglia

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13
Q

define mixed nerve

A

contains motor and sensory axons

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14
Q

where do spinal nerves flow out

A

intervertebral foramen between adjacent vertebraes

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15
Q

The spinal nerves split into two

A

rami

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16
Q

what are the two rami of the spinal nerves

A

dorsal rami and ventral rami

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17
Q

what does the dorsal rami do

A

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

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18
Q

what does the ventral rami do

A

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

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19
Q

these carry autonomic impulses to and from ganglion

A

rami communicants

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20
Q

these are bundles of axon fascicles with connective tissue covering

A

peripheral nerves

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21
Q

this connective tissue covers the individual axon

A

endoneurium

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22
Q

this connective tissue covers the fasicles of the nerve

A

perineurium

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23
Q

this connective tissue covers the whole nerve

A

epineurium

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24
Q

define plexus

A

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

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25
Q

define the intercostal nerves

A

connection of ventral rami of thoracic spinal nerves

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26
Q

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

A

plexus

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27
Q

what are plexus named for

A

their general region and their pathway

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28
Q

name the four plexuses

A

cervical, brachial, lumbar, and sacral

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29
Q

name the nerve in the cervical plexus

A

phrenic nerve

30
Q

the nerves of the cervial plexus

A

C1-C4

31
Q

where does the cervical plexus supply nerves to?

A

skin and muscles of neck

32
Q

the nerves of the phrenic nerve

A

C3-C5 (help you stay alive)

33
Q

these motor nerves of the phrenic nerve innervate at the

A

diaphram

34
Q

what spinal n erves make the brachial plexus

A

C5-T1

35
Q

where do the brachial plexus supply nerves to?

A

skin and muscles of upper extremities

36
Q

name some nerves of the brachial plexus

A

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

37
Q

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

A

anterior upper arm

38
Q

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

A

lateral forearm

39
Q

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

A

anterior forearm and anterior and lateral hand

40
Q

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

A

the anterior and lateral hand

41
Q

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

A

anterior forearm and anterior hand

42
Q

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

A

medial, posterior, and anterior hand

43
Q

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

A

deltoid and teres minor

44
Q

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

A

shoulder

45
Q

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

A

posterior arm, posterior forearm, posterior hand

46
Q

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

A

posterior arm, posterior forearm, posterior and lateral hand

47
Q

where is the lumbar plexus

A

L1-L4

48
Q

the lumbar plexus supplies nerves to what area of the body

A

pelvic girdle and lower extremities

49
Q

name two nerves of the lumbar plexus

A

femoral nerve and obturator nerve

50
Q

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

A

anterior hip and thigh

51
Q

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

A

anterior thigh, medial lower leg, medial foot

52
Q

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

A

medial thigh

53
Q

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

A

medial thigh

54
Q

what nerves for the spinal nerves

A

L4-S4

55
Q

the sacral plexus supplies muscles to what part of the body

A

muscles and skin of lower extremities

56
Q

the sciatic nerve split into what other nerves

A

tibial and common fibular

57
Q

the common fibular nerve splits into what two nerves

A

superficial and deep fibular nerve

58
Q

The sciatic Nerve is specifically just ______ functions of the ______

A

motor of posterior thigh

59
Q

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

A

posterior lower leg

60
Q

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

A

posterior lower leg and plantar surface

61
Q

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

A

lateral lower leg

62
Q

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

A

lateral lower leg

63
Q

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

A

anterior lower leg

64
Q

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

A

anterior lower leg and dorsal surface of the foot

65
Q

what is the pathway of nerve impulses that produce reflexes

A

reflex arc

66
Q

name the parts of the reflex arc

A

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

67
Q

what is the effector

A

response to impulse

68
Q

what is the motor neuron

A

carrys the impulse from the CNS to affector

69
Q

what is the sensory neuron

A

carrys the impulse from the receptor to CNS

70
Q

what responds to stimuli in the reflex arc

A

sensory receptor

HSS305 Anatomy (20 decks)

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