Brainscape's Knowledge GenomeTM

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


See full index

MSK - OMS I > TBL 14 > Flashcards

TBL 14 Flashcards

Lumbar and Sacral Plexus

1
Q

lumbar plexus includes:

A 
iliohypogastric,
ilioinguinal,
genitofemoral,
lateral cutaneous of thigh, 
obturator,
femoral

“I (2x) Get Laid On Friday”
(T12-L4)

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

sacral plexus includes:

A 
superior gluteal,
inferior gluteal,
posterior cutaneous thigh,
pudendal,
sciatic (common fibular, tibial)

S.I.P.P.S.
(L4-S4)

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

lies in the posterior abdominal wall

A

lumbar plexus

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

the lumbar plexus lies in the

A

posterior abdominal wall

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

the iliohypogastric and ilioinguinal nerves arise from the ___ and passes ___

A

anterior ramus of L1;

inferiolaterally and anterior to the quadratus lumborum

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

the ___ nerves arise from the anterior ramus of L1 and passes inferolaterally and anterior to the quadratus lumborum

A

iliohypogastric and ilioinguinal (T12-L1)

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

the iliohypogastric and ilioinguinal nerves run ___, innervating the ___

A

superior and parallel to the iliac crest;

inferior portions of the transversus abdominis and internal oblique near the ASIS

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

the iliohypogastric and ilioinguinal nerves pass through the ___ to supply the ___ of the ___

A

internal and external obliques;
abdominal muscles and skin;
inguinal and pubic regions

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

the ___ nerves run superior and parallel to the iliac crest, innervating the inferior portions of the transversus abdominis and internal oblique near the ASIS, then pass through the internal and external obliques to supply the abdominal muscles and skin of the inguinal and pubic regions

A

iliohypogastric and ilioinguinal

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

inferior muscular innervations of the iliohypogastric and ilioinguinal nerves include:

A

transversus abdominis,

internal oblique

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

cutaneous innervations of the iliohypogastric and ilioinguinal nerves include:

A

inguinal and pubic regions

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

inferiorly muscularly innervated by the transversus abdominis and internal oblique

A

iliohypogastric and ilioinguinal nerves

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

cutaneously innervated by the inguinal and pubic regions

A

iliohypogastric and ilioinguinal nerves

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

muscular innervation of the genitofemoral nerve

A

cremaster muscle

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

cutaneous innervation of the genitofemoral nerve

A

scrotum (male) / mon pubis and labia majora (female);

anterior medial thigh (femoral triangle)

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

pierces the psoas major and runs inferiorly on its anterior surface

A

genitofemoral nerve (L1 and 2)

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

divides lateral to the common and external iliac arteries into the femoral and genital branches

A

genitofemoral nerve

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

the genitofemoral nerve divides ___ to the ___ into the ___ branches

A

lateral; common and external iliac arteries;

femoral and genital

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

the genitofemoral nerve pierces the ___ and runs ___

A

psoas major;

inferiorly on its anterior surface

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

innervates the scrotum and the cremaster muscle in men and the mon pubis and labia majora in women

A

genitofemoral nerve

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

the genitofemoral nerve innervates the

A

scrotum and cremaster muscle (men) and the mon pubis and labia majora (woman)

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

overlaps with the ilioinguinal nerve

A

genitofemoral nerve

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

the ___ branch of the ___ nerve innervates the skin of the anterior medial thigh

A

femoral; genitofemoral

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

the femoral branch of the genitofemoral nerve innervates the

A

skin of the anterior medial thigh

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

run inferolaterally on the iliacus and enters the thigh deep to the inguinal ligament / iliopubic tract, just medial to the ASIS

A

lateral cutaneous nerve of the thigh or lateral femoral cutaneous nerve (L2 and 3)

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

lateral cutaneous nerve of the thigh or lateral femoral cutaneous nerve run ___ and enters the ___

A

inferolaterally on the iliacus;

thigh deep to the inguinal ligament / iliopubic trast, just medial to the ASIS

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

supplies skin on the anterolateral surface of the thigh

A

lateral cutaneous nerve of the thigh or lateral femoral cutaneous nerve (L2 and 3)

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

lateral cutaneous nerve of the thigh or lateral femoral cutaneous nerve supplies ___

A

skin on the anterolateral surface of the thigh

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

muscular innervation of the lateral femoral cutaneous nerve includes:

A

none!

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

nerve that doesn’t have muscular innervation

A

lateral femoral cutaneous nerve

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

cutaneous innervation of the lateral femoral cutaneous nerve

A

anterolateral skin of the thigh

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

cutaneously innervated by the anterolateral skin of the thigh

A

lateral femoral cutaneous nerve

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

susceptible to compression under the inguinal ligament

A

lateral femoral cutaneous nerve

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

the lateral femoral cutaneous nerve is susceptible to

A

compression under the inguinal ligament

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

causes burning along the lateral thigh

A

meralgia paresthetica (gunslinger neuralgia)

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

why is it called gunslinger neuralgia

A

caused by a low riding belt

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

meralgia paresthetica causes

A

burning along the lateral thigh

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

muscular innervation of the obturator includes:

A

direct branch,
anterior branch,
posterior branch

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

direct branch of the muscular innervation of the obturator includes:

A

obturator externus

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

action of obturator externus

A

lateral rotation and adduction of hip

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

anterior branch of the muscular innervation of the obturator includes:

A

adductor longus,
adductor brevis,
gracilis,
pectineus

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

action of adductor longus and brevis

A

adduction and flexion of hip

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

action of gracilis

A

adduction and flexion of hip,

flexion of the knee

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

action of pectineus

A

adduction and thigh flexion (slight)

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

posterior branch of the muscular innervation of the obturator includes:

A

adductor magnus

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

action of adductor magnus

A

adduction, extension, and flexion (slight)

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

cutaneous innervation of the obturator

A

small patch on the medial thigh

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

cutaneously innervated by a small patch on the medial thigh

A

obturator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

muscular innervation of the femoral nerve includes:

A 
iliopsoas,
sartorius,
pectineus,
quadriceps femoris
- rectus femoris
- vastus medialis
- vastus lateralis
-vastus intermedius
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

action of the iliopsoas

A

flexion of the hip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

action of the sartorius

A

flexion of the hip and knee

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

action of the pectineus

A

flexion of the hip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

action of the quadriceps femoris

A

knee extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

which quadriceps femoris does hip flexion along with knee extension

A

rectus femoris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

cutaneous innervation of the femoral nerve

A 
anterior cutaneous branches (anteromedial skin of thigh),
saphenous nerve (medial skin of leg)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

cutaneously innervated by the anterior cutaneous branches and saphenous nerve

A

femoral nerve (L2, L3, L4)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

enters the thigh through the obturator foramen

A

obturator nerve (L2, L3, L4)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

divides into anterior and posterior branches

A

obturator nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

obturator nerve enters the ___ through the ___ and divides into ___ branches

A

thigh; obturator foramen;

anterior and posterior

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

iliohypogastric nerve originates from ___ vertebrae

A

L1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

ilioinguinal nerve originates from ___ vertebrae

A

L1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

genitofemoral nerve originates from ___ vertebrae

A

L1, L2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

lateral femoral cutaneous nerve originates from ___ vertebrae

A

L2, L3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

obturator nerve originates from ___ vertebrae

A

L2, L3, L4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

femoral nerve originates from ___ vertebrae

A

L2, L3, L4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

descends between the adductor longus and adductor brevis muscles

A

anterior branch of the obturator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

anterior branch of the obturator descends between the

A

adductor longus and brevis muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

descends between the adductor brevis and adductor magnus muscles

A

posterior branch of the obturator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

posterior branch of the obturator descends between the

A

adductor brevis and adductor magnus muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

innervates the medial compartment of the thigh

A

obturator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

obturator nerve innervates the ___ and its main action is ___ and it also helps with ___

A

medial compartment of the thigh;
adduction of the thigh (hip joint);
flexing the thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

adduction of the thigh (hip joint), and flexion of thigh

A

obturator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

direct branch of obturator includes:

A

obturator externus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
74
Q

action of obturator externus includes:

A

lateral rotation and adduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
75
Q

anterior branch of obturator includes:

A

adductor longus, adductor brevis, gracilis, pectineus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
76
Q

posterior branch of the obturator includes:

A

adductor magnus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
77
Q

arises from within the substance of the psoas major

A

femoral nerve (L2, L3, L4)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
78
Q

emerges between the iliacus and psoas major muscles

A

femoral nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
79
Q

enters the thigh by passing deep to the inguinal ligament and lateral to the femoral sheath

A

femoral nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
80
Q

femoral nerve arises from within the ___, emerges between the ___, and enters the ___ by passing ___

A

substance of the psoas major;
iliacus and psoas major muscles;
thigh; deep to the inguinal ligament and lateral to the femoral sheath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
81
Q

gives rise to muscular branches, articular branches to the hip and knee joints, and cutaneous branches

A

femoral nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
82
Q

femoral nerve gives rise to ___ branches

A

muscular, articular to the hip and knee joints, cutaneous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
83
Q

innervates the anterior compartment of the thigh

A

femoral nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
84
Q

main action is hip flexion and knee extension

A

femoral nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
85
Q

the femoral nerve innervates the ___ and its main action is ___

A

anterior compartment of the thigh;

hip flexion and knee extension

86
Q

muscular branches of the femoral nerve include:

A 
(anterior compartment of thigh)
iliopsoas,
sartorius,
pectineus,
quadriceps femoris
87
Q

anterior cutaneous branches of the femoral nerve include:

A

saphenous nerve

88
Q

medial cutaneous branch of the leg

A

saphenous nerve

89
Q

branches from T4 and T5 travel inferiorly over the pelvic brim to join S1 and the sacral plexus, forming the

A

lumbosacral trunk

90
Q

the lumbosacral trunk is formed by the

A

branches of T4 and T5 traveling inferiorly over the pelvic brim to join S1 and the sacral plexus

91
Q

sacral plexus nerves include:

A 
superior gluteal,
inferior gluteal,
posterior cutaneous nerve of the thigh,
pudendal
sciatic (fibular, tibial)
92
Q

additional nerves in the sacral region include:

A

superior and middle clunial nerves

93
Q

arise from the posterior rami of the spinal nerves

A

superior and middle clunial nerves

94
Q

superior clunial nerves originate from the ___ vertebrae

95
Q

middle clunial nerves originate from the ___ vertebrae

96
Q

innervate the skin of the superior and medial portions of the buttock

A

superior and middle clunial nerves

97
Q

the superior and middle clunial nerves innervate the

A

superior and medial portions of the buttock

98
Q

lateral thigh rotators include:

A

nerve to the piriformis,
nerve to the obturator internus,
nerve to the quadratus femoris

99
Q

superior gluteal nerve originates from the ___ vertebrae

A

L4, L5, S1

100
Q

inferior gluteal nerve originates from the ___ vertebrae

A

L5, S1, S2

101
Q

posterior cutaneous nerve of the thigh originates from the ___ vertebrae

A

S1, S2, S3

102
Q

pudendal nerve originates from the ___ vertebrae

A

S2, S3, S4

103
Q

sciatic nerve originates from the ___ vertebrae

104
Q

enters the buttock through the greater sciatic foramen above the piriformis

A

superior gluteal nerve (L4, L5, S1)

105
Q

the superior gluteal nerve enters the ___ through the ___ and passes between the ___ and innervates the ___

A

buttock;
greater sciatic foramen above the piriformis;
gluteus medius and minimus muscles;
gluteus medius and minimus, the tensor fasciae latae, and the hip joint

106
Q

passes between the gluteus medius and minimus muscles

A

superior gluteal nerve

107
Q

innervates the gluteus medius and minimus, the tensor fasciae latae, and the hip joint

A

superior gluteal nerve

108
Q

keeps pelvis level when contralateral limb is elevated

A

superior gluteal nerve

109
Q

superior gluteal nerve keeps ___ level when ___ is ___

A

pelvis;
contralateral limb;
elevated

110
Q

when the patient stands on one leg, the pelvis drops on the unaffected side

A

gluteus medius on opposite side is damaged

111
Q

when the gluteus medius on the opposite side is damaged

A

pelvis drops on the unaffected side when the patient stands on one leg

112
Q

positive trendelenburg test

A

when a patient is asked to walk, a gluteal limp or waddling appearance as a compensatory movement of the body to the affected side is present

113
Q

enters the buttock through the greater sciatic foramen below the piriformis

A

inferior gluteal, posterior cutaneous, pudendal, sciatic

114
Q

innervates the overlying gluteus maximus

A

inferior gluteal nerve (L5, S1, S2)

115
Q

main action is powerful extension of the hip and external rotation

A

inferior gluteal nerve

116
Q

the inferior gluteal nerve enters the ___ through the ___ and innervates the ___ and its main action includes the ___

A

buttock;
greater sciatic foramen below the piriformis;
overlying gluteus maximus;
powerful hip extension and external rotation

117
Q

the posterior cutaneous nerve to the thigh enters the ___ through the ___, runs deep to the ___ and emerges from the ___, descends on the ___ and innervates the ___

A 
buttock;
greater sciatic foramen;
gluteus maximus;
inferior border of the gluteus maximus;
posterior thigh;
skin of the inferior buttock (inferior clunial nerves), thigh, and calf, as well as a small portion of the scrotum or labium majus (perineal branches)
118
Q

runs deep to the gluteus maximus and emerges from its inferior border

A

posterior cutaneous nerve of the thigh (S1, S2, S3)

119
Q

descends on the posterior thigh

A

posterior cutaneous nerve of the thigh (S1, S2, S3)

120
Q

innervates the skin of the inferior buttock, thigh, and calf, as well as a small portion of the scrotum or labium majus

A

posterior cutaneous nerve of the thigh (S1, S2, S3)

121
Q

inferior clunial nerves innervates

A

skin of the interior buttock

122
Q

perineal branches innervate the

A

scrotum or labium majus

123
Q

passes the back of the ischial spine

A

pudendal nerve (S2, S3, S4)

124
Q

is medial to the internal pudendal artery

A

pudendal nerve (S2, S3, S4)

125
Q

enters the perineum with the internal pudendal artery via the lesser sciatic foramen

A

pudendal nerve (S2, S3, S4)

126
Q

innervates the skin of the perineum and anus, as well as the muscles of the external anal and urethral sphincters

A

pudendal nerve (S2, S3, S4)

127
Q

the pudendal nerve passes the ___ and is ___, enters the ___ with the ___ via the___, and innervates the ___

A

back of the ischial spine;
medial to the internal pudendal artery;
perineum; internal pudendal artery; lesser sciatic foramen;
skin of the perineum and anus, as well as the muscles of the external anal and urethral sphincters

128
Q

divides at the superior border of the popliteal fossa into the tibial nerve and the common peroneal nerve

A

sciatic nerve

129
Q

descends over the obturator internus gemelli and quadratus femoris muscles between the ischial tuberosity and the greater trochanter

A

sciatic nerve

130
Q

common peroneal nerve

A

common fibular nerve

131
Q

the sciatic nerve divides at the ___ into the ___ and descends over the ___ between the___

A

superior border of the popliteal fossa;
tibial nerve and the common peroneal nerve;
obturator internus gemelli and quadratus femoris muscles;
ischial tuberosity and the greater trochanter

132
Q

smaller terminal portion of the sciatic nerve at the apex of the popliteal fossa

A

common peroneal (fibular) nerve (L4-S2)

133
Q

the common peroneal (fibular) nerve originates from the ___ vertebrae

134
Q

the tibial nerve originates from the ___ vertebrae

135
Q

descends through the popliteal fossa, and superficially crosses the lateral head of the gastrocnemius muscle

A

common peroneal (fibular) nerve

136
Q

passes behind the head of the fibula

A

common peroneal (fibular) nerve

137
Q

gives rise to the lateral sural cutaneous nerve and the recurrent articular branch to the knee joint

A

common peroneal (fibular) nerve

138
Q

supplies the skin on the lateral part of the back of the leg

A

lateral sural cutaneous nerve

139
Q

the common peroneal (fibular) nerve is a ___ portion of the sciatic nerve at the ___ that descends through the ___ and ___ crosses the ___ and passes ___ while giving rise to the ___

A

smaller terminal;
apex of the popliteal fossa;
popliteal fossa;
superficially; lateral head of the gastrocnemius muscle;
behind the head of fibula;
lateral sural cutaneous nerve and the recurrent articular branch to the knee joint

140
Q

the lateral sural cutaneous nerve supplies the

A

skin on the lateral part of the back of the leg

141
Q

direct branches from the sciatic nerve innervate the

A

short head of the biceps femoris

142
Q

innervate the short head of the biceps femoris

A

direct branches of the sciatic nerve

143
Q

is vulnerable to injury as it winds around the neck of the fibula

A

common peroneal (fibular) nerve

144
Q

the common peroneal (fibular) nerve is

A

is vulnerable to injury

145
Q

the common peroneal (fibular) nerve divides into

A

deep fibular and superficial fibular nerves

146
Q

the common peroneal (fibular) nerve laterally winds around the ___ and pierces the ___

A

neck of the fibula;

fibularis (peroneus) longus

147
Q

pierces the fibularis (peoneus) longus

A

common peroneal (fibular) nerve

148
Q

arises in the peroneus longus muscle on the lateral side of the neck of the fibula

A

superficial fibular nerve

149
Q

the superficial fibular nerve arises in the ___ on the ___ making it ___

A

peroneus longus muscle;
lateral side of the neck of the fibula;
less vulnerable to injury

150
Q

innervates the lateral compartment of the leg

A

superficial fibular nerve

151
Q

the superficial fibular nerve innervates the ___ with the ___ muscles, and its main action is ___

A

lateral compartment of the leg;
fibularis (peroneus) longus and brevis;
foot eversion and plantar flexion

152
Q

foot eversion and plantar flexion is performed by:

A

the superficial fibular nerve

153
Q

the superficial fibular nerve emerges between the ___ and becomes ___ in the ___ and innervates the ___

A

peroneus longus and brevis muscles at the lower third of the leg;
subcutaneous; lateral compartment;
skin on the lateral side of the lower leg and the dorsum of the foot

154
Q

innervates the skin on the lateral side of the lower leg and the dorsum of the foot

A

superficial fibular nerve

155
Q

arises in the substance of the fibularis (peroneus) longus on the lateral side of the neck of the fibula

A

deep fibular nerve

156
Q

enters the anterior compartment

A

deep fibular nerve

157
Q

descends on the interosseous membrane between the extensor digitorum longus and the extensor hallucis longus muscles

A

deep fibular nerve

158
Q

innervates the anterior compartment of the leg

A

deep fibular nerve

159
Q

main action is dorsiflexion of the foot and extension of the toes

A

deep fibular nerve

160
Q

the anterior compartment of the leg includes:

A

tibialis anterior,
extensors digitorum longus,
extensors hallucis longus,
fibularis tertius

161
Q

the lateral branch of the deep fibular nerve reaches the

A

dorsum of the foot

162
Q

the dorsum of the foot includes:

A

extensor digitorum brevis,

extensor hallucis brevis

163
Q

the medial branch of the deep fibular nerve supplies the

A

skin on the adjacent sides of the first and second toes

164
Q

the deep fibular nerve arises in the ___ on the ___ of the ___ making it ___

A

substance of the fibularis (peroneus);
lateral side; neck of the fibula;
vulnerable to injury

165
Q

the deep fibular nerve enters the ___, descends on the ___ between the ___ and innervates the ___, and its main action is ___

A

anterior compartment;
interosseous membrane;
extensor digitorum longus and the extensor hallucis longus muscles;
anterior compartment of the leg;
dorsiflexion of the foot, and extension of the toes

166
Q

reaches the dorsum of the foot and extends the toes

A

lateral branch of the deep fibular nerve

167
Q

supplies the skin on the adjacent sides of the first and second toes

A

medial branch of the deep fibular nerve

168
Q

common peroneal (fibular) nerve injury occurs specifically with the

A

deep fibular and anterior compartment

169
Q

common peroneal (fibular) nerve injury is characterized by

A

injury at the neck of the fibula;
flaccid paralysis of muscles in the anterior (dorsiflexors) and lateral (evertors) leg compartments;
no dorsiflexion – foot drop;
limb becomes too long for toes to clear the ground during walking;
waddling gait;
swing-out gait;
stepping gait

170
Q

body movement shifts to the unaffected side while walking

A

waddling gait

171
Q

leg is abducted while walking

A

swing-out gait

172
Q

increased thigh and knee flexion while walking

A

stepping gait

173
Q

waddling gait

A

body movement shifts to the unaffected side while walking

174
Q

swing-out gait

A

leg is abducted while walking

175
Q

stepping gait

A

increased thigh and knee flexion while walking

176
Q

common peroneal (fibular) nerve injury occurs at the ___ leading to ___ of muscles in ___

A

neck of the fibula;
flaccid paralysis;
the anterior and lateral compartments

177
Q

no dorsiflexion and the toes don’t clear the ground during the swing phase of walking

178
Q

foot drop

A

no dorsiflexion; toes do not clear the ground during the swing phase of walking

179
Q

dorsiflexors reside in the

A

anterior compartment

180
Q

evertors reside in the

A

lateral compartment

181
Q

descends through the popliteal fossa lying on the popliteus muscle

A

tibial nerve

182
Q

gives rise to 3 articular branches to the knee joint

A

tibial nerve

183
Q

gives rise to direct muscular branches of the sciatic nerve to the posterior compartment of the thigh

A

tibial nerve

184
Q

posterior compartment of the thigh also called

A

the hamstring

185
Q

the hamstring is the

A

posterior compartment of the thigh

186
Q

main action of the posterior compartment of the thigh includes:

A

flex leg (knee) and extend hip in walking

187
Q

flexes leg (knee) and extends hip in walking

A

direct muscular branch of the sciatic nerve

188
Q

the hamstring innervated by the direct muscular branch of the sciatic nerve contains:

A

long head of the biceps femoris, semimembranosus, semitendinosus, and medial part of the adductor magnus

189
Q

the tibial nerve descends through the ___ lying on the ___ and gives rise to ___

A

popliteal fossa;
popliteal muscle;
three articular branches to the knee joint

190
Q

the tibial nerve branches enter the

A

posterior compartment of the leg

191
Q

action of the posterior compartment of the leg

A

plantar flexion of the foot, flexion of the knee

192
Q

plantar flexion of the foot and flexion of the knee are performed by

A

the tibial nerve branches

193
Q

foot drop occurs when the ___ do not clear the ground during the ___

A

toes; swing phase of walking

194
Q

the posterior compartment of the leg includes:

A 
flexor digitorum longus, 
flexor hallucis longus,
triceps surae (gastrocnemius and soleus), 
plantaris,
popliteus,
tibialis posterior
195
Q

gives rise to the medial sural cutaneous nerve, the medial calcaneal branch to the skin of the heel and sole, and the articular branches to the ankle joint

A

tibial nerve

196
Q

terminates beneath the flexor retinaculum by dividing into the medial and lateral plantar nerves

A

tibial nerve

197
Q

innervate all the plantar muscles in the foot accomplishing adduction, abduction, and flexion of the toes

A

medial and lateral plantar nerves

198
Q

the tibial nerve terminates beneath the ___ by dividing into the ___ which innervate ___ accomplishing ___

A

flexor retinaculum;
medial and lateral plantar nerves;
all the plantar muscles in the foot;
adduction, abduction, and flexion of the toes

199
Q

inverts the foot

A

tibialis posterior

200
Q

compression of the sciatic nerve can occur due to compression via the piriformis muscle

A

piriformis syndrome

201
Q

piriformis syndrome occurs when the

A

piriformis muscle compresses the sciatic nerve

202
Q

damage via ___ to the medial aspect of the buttock puts the ___ at risk

A

stab wound / intragluteal injections;

sciatic nerve, inferior gluteal, posterior cutaneous nerve of the thigh

203
Q

a stab wound or intragluteal injections at the ___ can put the sciatic nerve, inferior gluteal, and posterior cutaneous nerve of the thigh at risk

A

medial aspect of the buttock

204
Q

damage to the sciatic nerve can lead to ___ and hence ___

A

paralysis of hamstrings;

impairment of thigh extension and knee flexion

205
Q

paralysis of hamstrings causes

A

impairment of thigh extension and knee flexion

206
Q

paralysis of hamstrings can be caused by

A

damage to the sciatic nerve

207
Q

femoral nerve injury can be caused by ___ and impair ___ leading to ___

A

trauma at femoral triangle / pelvic fracture;

weak flexion of thigh, loss of extension of leg, sensory loss on anterior thigh and medial leg;

loss of knee-jerk reflex / anesthesia on anterior thigh

208
Q

obturator nerve injury can be caused by ___ and impair ___ leading to ___

A

anterior hip dislocation / radical retropubic prostatectomy;

loss of adduction of thigh, sensory loss on medial thigh;

((blank))

209
Q

superior gluteal nerve injury can be caused by ___ and impair ___ leading to ___

A

surgery / posterior hip dislocation / poliomyelitis;

loss of function of gluteus medius and minimus, loss of ability to pull pelvis down, loss of abduction of thigh;

gluteus medius limp (waddling gait), positive trendelenburg sign

210
Q

inferior gluteal nerve injury can be caused by ___ and impair ___ leading to ___

A

surgery / posterior hip dislocation;

loss of function of gluteus maximus, loss of ability to rise from a seated position, climb stairs, or jump;

lean the body trunk backward at heel strike

211
Q

common fibular nerve injury can be caused by ___ and impair ___ leading to ___

A

blow to lateral aspect of leg / fracture of neck of fibula;

loss of foot eversion, loss of dorsiflexion, loss of toe extension, sensory loss on anterolateral leg and dorsum of foot;

foot plantar flexed (foot drop) and inverted, can’t stand on heels (foot slap)

212
Q

tibial nerve injury at the popliteal fossa can be caused by ___ and impair ___ leading to ___

A

trauma at popliteal fossa;

weak foot inversion, loss of plantar flexion, loss of toe flexion, sensory loss on sole of foot;

foot dorsiflexed and everted, can’t stand on toes

MSK - OMS I (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions