Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PNS quizzes > quiz 5: sacral plexus > Flashcards

quiz 5: sacral plexus Flashcards

1
Q

how many pairs of sacral spinal nerves are there

A

5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

the nerves descend inside the dura to form much of the

A

cauda equina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

each sacral nerve divides into

A

an anterior and posterior primary ramus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what makes up the posterior primary rami

A

s1-s4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what do the posterior primary rami travel through

A

the 4 posterior sacral foramina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what does s5 travel through

A

sacral hiatus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

the sacral posterior rami decrease in size from

A

superior to inferior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

the posterior primary rami of s1-s3 divide into

A

medial and lateral branches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what do the medial branches supply

A

the adjacent multifidi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what do the lateral branches combine with

A

L5 and s4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what do the lateral branches supply

A

skin over the buttocks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

the posterior primary rami of ___ unite with the coccygeal posterior rami

A

S4 and S5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what does the posterior primary rami of S4 and S5 and the coccygeal posterior rami supply

A

the skin over the coccyx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what do the anterior primary rami of S1-S4 travel through

A

the 4 anterior sacral foramina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what does the anterior primary rami contribute to

A

the sacral (S1-S4) and coccygeal (S4,S5) plexuses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

3 or 4 sacral sympathetic ganglia communicate with the

A

sympathetic trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what will each sacral nerve of the anterior primary rami receive

A

postganglionic sympathetic fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what does each nerve receive postganglionic sympathetic fibers from

A

gray ramus communicans

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what forms the sacral plexus

A

L4, L5, S1-S3, and part of S4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

the contributions from L4 and L5 are by way of the

A

lumbosacral trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

where does the plexus form

A

on the anterior surface of the piriformis muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

when do the nerve roots divide into an anterior and posterior division

A

shortly after exiting their IVF/sacral foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what fibers make up the nerve to the quadratus femoris and gemellus inferior

A

L4, L5 and S1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

where does the nerve to the quadratus femoris and gemellus inferior leave the pelvis

A

through the greater sciatic foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what is the function of the nerve to the quadratus femoris and gemellus inferior

A

muscles that contribute to lateral rotation and adduction of the thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

what fibers make up the nerve to the obturator internus and gemellus superior

A

L5, S1, and S2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

where does the nerve to the obturator internus and gemellus superior leave the pelvis

A

through the greater sciatic foramen-> then gives off branches to the gemellus superior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

where does the nerve to the obturator internus and gemellus superior reenter the pelvis

A

via the lesser sciatic foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

what does the lesser sciatic foramen supply

A

the obturator internus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

what is the function of the nerve to the obturator internus and gemellus superior supply

A

muscles that contribute to lateral rotation and abduction of the thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

what fibers make up the pudendal nerve

A

S2, S3 and S4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

where does the pudendal nerve leave the pelvic cavity

A

through the greater sciatic foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

what does the pudendal nerve arch around

A

ischial spine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

what does the pudendal nerve enter the perineum via

A

lesser sciatic foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

what does the pudendal nerve travel in

A

the pudendal canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

what does the pudendal nerve travel inferior to

A

the pubic symphysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

what does the pudendal nerve supply

A

the dorsal side of the penis or clitoris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

what comes off the pudendal nerve within the pudendal canal

A

several branches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

what do the inferior rectal nerves supply

A

skin around the anus and the inferior 2/3 of the anal canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

what nerve is associated with the anal pucker response

A

inferior rectal nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

what muscle does the inferior rectal nerve supply

A

external anal sphincter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

the ___ nerve is given off the pudendal nerve and divides into deep and superficial branches

A

perineal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

what muscles does the deep branch of the perineal nerve supply

A

external anal sphincter, bulbosponsiosus, ischiocavernosus, superficial transverse perineus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

what does the superficial branches of the perineal nerve supply

A

posterior scrotum, urethral mucosa, bulb of the penis, labium magus, external urethral orifice and vestibule

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

the terminal branch of the pudendal nerve (dorsal nerve of the penis or clitoris) supplies what muscles

A

deep transverse perineus and urethral sphincter muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

what does the dorsal nerve supply

A

sensory to the corpus cavernous, glans penis, skin covering the penis, corpus cavernosum and clitoris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

what fibers form the muscular branches off the sacral plexus

A

S4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

what do the muscular branches of the sacral plexus supply

A

levator ani and coccygeus muscles

49
Q

what fibers make up the pelvic splanchnic nerves

A

S2, S3, and S4

50
Q

what fibers make up the nerve to the piriformis

A

S1 and S2

51
Q

what fibers make up the superior gluteal nerve

A

L4, L5 and S1

52
Q

where does the superior gluteal nerve leave the pelvis

A

through the greater sciatic foramen

53
Q

the superior gluteal nerve travels superior to the

A

piriformis

54
Q

what does the superior gluteal nerve split into

A

superior and inferior branches

55
Q

what does the superior branch of the superior gluteal nerve supply

A

gluteus medius and gluteus minimus

56
Q

what does the inferior branch of the superior gluteal nerve supply

A

gluteus medius, gluteus minimus, and tensor fascia lata

57
Q

what fibers make up the inferior gluteal nerve

A

L5, S1 and S2

58
Q

where does the inferior gluteal nerve leave the pelvis

A

through the greater sciatic foramen

59
Q

what does the inferior gluteal nerve travel inferior to

A

piriformis

60
Q

what does the inferior gluteal nerve supply

A

gluteus maximus

61
Q

what fibers form the perforating cutaneous nerve

A

S2 and S3

62
Q

what does the perforating cutaneous nerve travel through

A

sacrotuberous ligament

63
Q

what does the perforating cutaneous nerve reach

A

the lower medial aspects of the buttocks

64
Q

where can the perforating cutaneous nerve also come off of

A

as a branch of the pudendal nerve

65
Q

what 2 nerves are formed by both the anterior and posterior divisions of the sacral plexus

A

posterior cutaneous nerve of the thigh and the sciatic nerve

66
Q

what fibers form the posterior cutaneous nerve of the thigh

A

anterior S2 and S3 and posterior S1 and S2

67
Q

where does the posterior cutaneous nerve of the thigh leave the pelvis

A

through the greater sciatic foramen

68
Q

where does the posterior cutaneous nerve of the thigh descend

A

through the posterior thigh and inferior to the leg

69
Q

what does the posterior cutaneous nerve of the thigh communicate with

A

sural nerve

70
Q

what does the posterior cutaneous nerve of the thigh supply

A

skin on the posterior and medial thigh

71
Q

what is the largest nerve in the human body

A

sciatic nerve

72
Q

what forms the sciatic nerve

A

tibial and common fibular nerve

73
Q

what fibers make up the tibial nerve

A

anterior L4-S3

74
Q

what fibers make up the common fibular nerve

A

posterior L4-S2

75
Q

what fibers make up the sciatic nerve

A

anterior L4-S3 and posterior L4-S2

76
Q

where does the sciatic nerve leave the pelvis

A

through the greater sciatic foramen through a common sheath

77
Q

where does the sciatic nerve travel below to

A

piriformis muscle

78
Q

where does the sciatic nerve travel inferior to

A

posterior aspect of the adductor magnus

79
Q

where does the sciatic nerve split

A

2/3 of the way to the knee-> variable

80
Q

what fibers make up the common fibular nerve

A

L4-S2

81
Q

what does the common fibular nerve travel around

A

the lateral aspect of the fibula

82
Q

what does the common fibular nerve give off

A

articular branch to the knee joint

83
Q

what branches are given off as the common fibular nerve travels along the lateral aspect of the popliteal fossa

A

sensory branches: lateral sural cutaneous nerve and fibular communicating branch

84
Q

what does the lateral rural cutaneous nerve supply

A

skin on the lateral aspect of the leg

85
Q

what does the fibular communicating branch form with the medial rural cutaneous nerve

A

sural nerve

86
Q

what does the common fibular nerve divide into

A

superficial and deep fibular nerves

87
Q

what does the superficial fibular nerve travel inferior to

A

between the fibulas longus and the fibular

88
Q

where does the superficial fibular nerve end

A

dorum of the foot

89
Q

what does the superficial fibular nerve supply

A

fibulas longus and fibulas brevis

90
Q

what does the superficial fibular nerve split into

A

medial dorsal cutaneous nerve and intermediate dorsal cutaneous nerve

91
Q

what do the branches of the superficial fibular nerve supply

A

skin over the dorsum of the foot, except for the skin between the first 2 toes

92
Q

what does the deep fibular nerve run inferior to

A

along the tibias anterior

93
Q

where does the deep fibular nerve reach

A

dorsum of the foot

94
Q

what does the deep fibular nerve supply

A

extensor muscles of the foot and toes

95
Q

what specific muscles does the deep fibular nerve supply

A

tibialis anterior, extensor digitorum longus, extensor digitorum brevis, extensor hallucis longus, extensor hallucis brevis, fibularis tertius

96
Q

what does the deep fibular nerve supply sensory-wise

A

skin between the first 2 toes

97
Q

what is steppage gait

A

inability to dorsiflex

98
Q

what nerve causes stoppage gait

A

deep fibular nerve

99
Q

what fibers form the tibial nerve

A

L4-S3

100
Q

what does the common fibular nerve supply

A

biceps femoris, semitendinosus, semimembranosus, adductor magnus

101
Q

what does the tibial nerve give off in the popliteal fossa

A

articular branches that supply the knee joint, muscular branches, popliteal branch and medial sural cutaneous nerve

102
Q

what does the tibial nerve supply in the popliteal fossa

A

popliteus, gastrocnemius, soleus, plantaris

103
Q

what does the popliteal branch eventually turn into

A

interosseous nerve of the leg

104
Q

what does the interosseous nerve of the leg supply

A

tibial periosteum, ankle, and tibiofibular joints

105
Q

what does the tibial nerve supply in the leg

A

flexor digitorum longus, flexor hallucis longus, tibialis posterior

106
Q

what does the medial calcaneal branches supply

A

skin over the medial heel and sole of the foot

107
Q

what does the tibial nerve travel around

A

the medial malleolus

108
Q

what does the tibial nerve split into

A

medial plantar nerve and lateral plantar nerve

109
Q

what does the medial plantar nerve supply

A

abductor hallucis, flexor digitorum brevis, flexor hallucis brevis

110
Q

what does the medial plantar nerve supply

A

common plantar digital nerves

111
Q

what does the common plantar digital nerves supply motor-wise

A

lumbricals 1 and 2

112
Q

what does the common plantar digital nerves supply sensory-wise

A

skin between the toes

113
Q

how does the common plantar digital nerves supply the skin between the toes

A

via proper plantar digital nerves

114
Q

what does the lateral plantar nerve divide into

A

superficial and deep branches

115
Q

what does the superficial branch of the lateral plantar nerve supply

A

skin around the 5th digit

116
Q

what does the deep branch of the lateral plantar nerve supply

A

adductor hallucis, flexor digiti minimi brevis, abductor digiti minimi, quadratus plantae, lateral lumbricals and interossei muscles

117
Q

what nerve causes flexor paralysis

A

tibial nerve

118
Q

what is flexor paralysis

A

ability to curl toes against resistance

119
Q

what are hammer toes

A

shortening of tendons

PNS quizzes (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions