NV Relationships of the LE Flashcards
The subcostal nerve has T_ segmental innervation
12
The subcostal nerve runs right (above/below) the 12th rib and enters the (internal oblique/transverse abdominis). It runs (deep/superficial) to the transverse abdominis and internal oblique. It comes out (above/below) the lower portion of the anterolateral abdominal wall midway between the umbilicus and iliac crest and innervates the skin in this region.
below; transverse abdominis; superficial; below
The subcostal nerve travels between the (external oblique/transverse abdominis) and (rectus abdominis/internal oblique) and supplies both muscles in that region
transverse abdominis; internal oblique
The thoracoabdominal nerves innervate the (superior/inferior) portion of the (anterolateral/posterior) abdominal wall .
superior; anterolateral
The iliohypogastric nerve has T_ and L_ segmental innervation.
T12 and L1
The iliohypogastric nerve merges along the lateral portion of the (psoas major/iliacus) and crosses over the (psoas major/quadratus lumborum). We see it near the (anterior/posterior) aspect of the iliac crest where it pierces the (internal oblique/transverse abdominis). It travels between the (external oblique/transverse abdominis) and (rectus abdominis/internal oblique) and supplies both muscles in that region and a patch of skin In the anterolateral abdominal wall in the area above the pubis.
psoas major; quadratus lumborum; posterior; transverse abdominis; transverse abdominis; internal oblique
The ilioinguinal nerve has an L_ segmental innervation.
L1
The ilioinguinal nerve comes off the (medial/lateral) aspect of the psoas major, crossing the QL. It is going to enter the anterolateral abdominal wall further (anterior/posterior) on the iliac crest. It is going to supply innervation to the (internal oblique/external oblique) and (transverse abdominis/rectus abdominis) muscles, it is then going to exit and run through the ____ canal. It will emerge through the (superficial/deep) inguinal ring after coming through the (superficial/deep) inguinal ring to supply skin to the anteromedial proximal thigh, skin of the scrotum, labia majora or mons pubis.
lateral; anterior; internal oblique and transverse abdominis; inguinal; superficial; deep
The genitofemoral nerve has L_-L_ segmental innervations and runs (on top of/ below) the psoas major.
L1-L2; on top of
The femoral component of the genitofemoral nerve runs (on top of/underneath) the inguinal ligament and the genito component comes out of the (deep/superficial) ring in the spermatic cord and supplies innervation to skin of the proximal anterior thigh, anterior peroneal region, and the cremaster muscle.
underneath; superficial
The lateral femoral cutaneous nerve has segmental innervations of L_-L_ and is a (anterior/posterior) division nerve.
L2-L3; posterior
The lateral femoral cutaneous nerve will merge (medial/lateral) to the psoas major and it runs across the (QL/iliacus). It will exit right by the ASIS region of the pelvis by either going under or through the ____ ligament. It will provide innervation to the skin of the (medial/lateral) thigh.
lateral; iliacus; inguinal; lateral
The femoral nerve has L_-L_ segmentations and has (anterior/posterior) division fibers.
L2-L4; posterior
The femoral nerve is just (medial/lateral) to the psoas major and exits the pelvis deep to the _____ ligament and it explodes into a whole series of branches of nerves. All those branches run to the various muscles that it innervates as well as cutaneous branches that supply skin to the (anterior/posterior) thigh. It will continue down to the (medial/lateral) leg and foot as the _____ nerve.
lateral; inguinal; anterior; medial; saphenous
The obturator nerve has L_-L_ segmental innervations and has (anterior/posterior) division fibers.
L2-L4; anterior
The obturator nerve runs (medial/lateral) and (superficial/deep) to the psoas major and as it runs medial it is going to come down and go through the rim of the ____ foramen. To do that, it will have to go through the obturator (internus/externus) before getting through the obturator foramen. As it comes out it splits to an anterior and posterior branch that pierces the obturator (internus/externus) and then straddle the adductor (longus/brevis). The anterior branch lies (superficial/deep) to the adductor brevis and the posterior branch lies (superficial/deep) to the adductor brevis. From there it is going to supply the branches of the motor innervations to all of the muscles in the (medial/anterior) compartment of the thigh and skin on the distal-medial thigh.
medial and deep; obturator; internus; externus; brevis; superficial; deep; medial
The posterior femoral cutaneous nerve has S_-S_ segmental innervations and (contains/does not contain) anterior and posterior division fibers.
S1-S3; contains
The posterior femoral cutaneous nerve passes through the (lesser/greater) sciatic foramen and comes out inferior to the piriformis and is (medial/lateral) or (anterior/posterior) to the sciatic nerve depending on the person. It is never (medial/lateral). It is going to innervate the skin of the (anterior/posterior) thigh and (proximal/distal) aspect of the calf.
greater; medial or posterior; lateral; posterior; proximal
The sciatic nerve has L_-S_ (lateral/anterior) and (inferior/posterior) division fibers.
L4-S3; anterior and posterior
The sciatic nerve passes out of the (greater/less) sciatic foramen, inferior to the piriformis muscle. The____ and _______ are the two nerves of the sciatic nerve. The common fibular nerve pierces the piriformis in 12-15% of people. The sciatic nerve is going to divide into the two parts on the (proximal/distal) third of the thigh. The sciatic nerve innervates the hamstring as it proceeds distal. The common fibular nerve is more (medial/lateral) when it splits.
greater; tibial and common fibular; distal; lateral
The tibial division of the sciatic nerve has L_-S_ nerve segmentations and has (anterior/posterior) division nerve fibers and the common fibular division of the sciatic nerve has L_-S_ segmental innervations and has (anterior/posterior) division nerve fibers.
L4-S3; anterior; L4-S2; posterior
The tibial nerve is going straight through the middle of the (adductor/popliteal) fossa where it gives off branches to the soleus, gastrocnemius, plantaris, and the popliteus muscle . It also gives off a branch in this region called the ____ cutaneous nerve.
popliteal; sural
The sural nerve is not the full sural nerve yet when it branches off of the tibial nerve, it is the (medial/lateral) component of the true sural nerve.
medial
All of the branching of the tibial nerve occurs in the (adductor/popliteal) fossa because after that it is going to dive deep and behind the ____ and the ______ muscle.
popliteal; gastrocnemius; soleus
When looking for the sural nerve, one area to look at is where you see the branch coming off of the tibial nerve that is (superficial/deep) to the gastrocnemius. That would be the (medial/lateral) branch of the sural nerve.
superficial; medial
The tibial nerve will continue down the leg (laterally/centrally). You’ll see it coming down deep to the soleus. It ends up in the (flexor/extensor) retinaculum. When it gets through the tarsal tunnel and enters the plantar aspect of the foot it will divide into the medial and lateral ____ nerves.
centrally; flexor; plantar
The ____ muscle sits between the medial and lateral plantar nerves. To get to this point the nerves have to go (superficial/deep) to the abductor hallucis.
quadratus plantae; deep
The lateral plantar nerve is on the (medial/lateral) side. The medial plantar nerve is on the (medial/lateral) side.
lateral; medial
The medial plantar nerve travels between (adductor/abductor) hallucis and the tendon of the (flexor digitorum superficialis/flexor digitorum longus). It innervates the abductor hallucis, flexor digitorum brevis, flexor hallucis brevis, and the 1st lumbrical.
abductor; flexor digitorum longus;
The medial plantar nerve is going to innervate the (dorsal/plantar) aspect of the skin of the (medial/lateral) foot and (2/3) and a half toes. It will split to _____ and ______ digital nerves as it runs through the foot just like we saw in the hand.
plantar; medial; 3; common and proper
The lateral plantar nerve travels between the (flexor digitorum brevis/flexor digitorum longus) and the (proximal/distal) portion of quadratus plantae and then splits into (anterior/superficial) and (posterior/deep) branches. It will innervate the ________ and the _______ before it splits. Then the superficial branch will innervate the flexor ______. The superficial and deep branch will innervate the 2nd, 3rd, & 4th (interossei/lumbricals). The deep branch will innervate the (adductor/abductor) hallucis and all 7 (lumbricals/interossei).
flexor digitorum brevis; proximal; superficial and deep; quadratus plantae and the abdductor digiti minimi; flexor digiti minimi; lumbricals; adductor; interoessei
The lateral plantar nerve innervates the skin of the (medial/lateral) aspect of foot & (medial/lateral) (1 and a half/ 2 and a half) toes (common and proper digital nerves).
lateral; lateral; 1 and a half
The common fibular nerve comes off next to the tendon of the (semitendinosus/biceps femoris), coming down in the proximal leg laterally, and it goes right by the neck of the fibula. As it wraps around the neck of the fibula it will then divide into (posterior/superficial) and (anterior/deep) branches. That division is going to occur deep to the fibularis (brevis/longus). At this same time, it is going to also give off a branch known as the lateral ___ cutaneous nerve somewhere in the proximal area before it crosses the neck of the fibula.
biceps femoris; superficial and deepl; longus; sural
The lateral sural cutaneous branch is going to be (superficial/deep) and it is going to join with the medial branch to form the ___ nerve.
superficial; sural
The lateral branch of the common fibular nerve innervates more of the (proximal/distal) and (medial/lateral) leg.
proximal; lateral
When the common fibular nerve splits to deep and superficial, you can see that the deep fibular nerve is going to travel through the (anterior/posterior) compartment. It will actually go through the anterior septum of the lateral compartment and enter the anterior compartment and supply all of the muscles of the (anterior/lateral) compartment of the leg. As it crosses the ankle and enters the foot it is going to supply some muscles on the (dorsum/plantar aspect) of the foot (extensor digitorum brevis and the extensor hallucis brevis) and the skin of the web space between the (1st/3rd) and (2nd/4th) toes.
anterior; anterior; dorsum; 1st and 2nd
The superficial fibular nerve travels just (superficial/deep) to the fibularis longus between the fibularis longus and fibularis brevis and it is going to supply those two muscles in the lateral compartment and the skin of the (anterolateral/posteromedial) aspect of leg and (dorsal/plantar) aspect of the foot.
deep; anterolateral; dorsal
The (medial/lateral) component of the sural nerve is coming off of the popliteal fossa. The (medial/lateral) component is coming off of the fibula head and neck. Somewhere along the line you will see two nerves coming together and we will be superficial. The sural nerve will travel (superficial/deep) to the gastrocnemius muscle and pierce the investing fascia of the posterior leg to supply skin in the (anteromedial/posterolateral) leg and (medial/lateral) foot
medial; lateral; superficial; posterolateral; lateral
The (UE/LE) nerves don’t get as entrapped compared to the (UE/LE) nerves.
LE; UE
The femoral artery is a direct continuation of the (internal/external) iliac artery in the pelvis.
external
The external iliac artery becomes the ____ artery as it passes under the _____ ligament.
femoral; inguinal
The small branches that come off the femoral artery in the femoral triangle are the (superficial/deep) _____, (superficial/deep) _____ circumflex, and the (internal/external) _____.
superficial epigastric; superficial iliac; external
The deep femoral artery (profunda femoris) is the (smallest/largest) branch off the femoral artery and typically arises towards the (proximal/distal) portion of the femoral triangle. It passes (medial/lateral) and (superficial/deep) to the femoral artery and is (superficial/deep) to the adductor muscles
largest; proximal; lateral; deep; superficial
The deep femoral artery has the following branches: medial and lateral femoral ____ arteries and 3-4 ____ arteries.
circumflex; perforating
The femoral artery passes into the adductor canal and enters the popliteal fossa where its name changes to the _____ artery
popliteal
The popliteal artery is going to end at the distal end of the _____ muscle by dividing into the anterior ____ and posterior ___ artery. As it crosses into the leg, proximally it will divide into these two arteries.
popliteus; tibial; tibial
The posterior tibial artery runs through the (anterior/posterior) compartment of leg and gives off the (tibial/fibular) artery.
posterior; fibular
The posterior tibial artery lies posterior to the (medial/lateral) malleolus and (superficial/deep) to the (flexor/extensor) retinaculum.
medial; deep; flexor
The (anterior/posterior) tibial artery ends by dividing into the medial and lateral (tibial/plantar) arteries
posterior; plantar
The medial plantar artery supplies the (medial/lateral) aspect of the foot.
medial
The lateral plantar artery is (smaller/larger) than the medial plantar artery and supplies (medial/lateral) aspect of the foot
larger; lateral
The (medial/lateral) plantar artery is the primary vessel that contributes to formation of the plantar ______
lateral; arterial arch
The anterior tibial artery runs through the (anterior/posterior) compartment of the leg
anterior
The (anterior/posterior) tibial artery ends by running deep to the extensor retinaculum. At the distal edge of the inferior extensor retinaculum its name changes to the _____ artery.
anterior; dorsalis pedis
The dorsalis pedis artery gives rise to the (superficial/deep) plantar branch that dives between the bases of the (1st/3rd) and (2nd/4th) metatarsals to complete the plantar _____ arch.
deep; 1st and 2nd; arterial
