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LUMBAR PLEXUS | Questions and Correct Answers | Latest Graded A+ 2024/2025
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LUMBAR PLEXUS | Questions and Correct Answers | Latest Graded A+ 2024/2025
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LUMBAR PLEXUS | Questions andCorrect Answers | Latest Graded A+
2024/2025
What is the mnemonic for the lumbar plexus? - Answer - Some Idiots in
Georgia Like Facing Off
Some = Subcostal n. (T12)
Idiots= Iliohypogastric n. (T12, L1)
In = Ilioinguinal n. (L1)
Georgia = Genitofemoral n. (L1, L2)
Like = Lateral Femoral Cutaneous n. (L2, L3)
Facing = Femoral n. (L2, L3, L4)
Off = Obturator n. (L2, L3, L4)
The lumbar plexus is made up of the nerve roots from what vertebrae? -
Answer - T12-L4(5)
Which is the largest branch of the lumbar plexus? - Answer - Femoral n.
The femoral n. arises from which nerve roots? - Answer - L2, L3, & L4
, Iliohypogastric n. arises from which nerve root? - Answer - Anterior
ramus of L1
The L1 trunk enters the abdomen and is bounded by what structures? -
Answer - Posterior to medial arcuate ligament
Superior to iliac crest
On anterior surface of quadratus lumborum m.
What type of innervation does the iliohypogastric n. provide? - Answer -
Sensory
The iliohypogastric n. provide sensory innervation via what branches? -
Answer - Lateral cutaneous branch
Anterior cutaneous branch
Lateral cutaneous branch supplies what area of skin? - Answer -
Posterolateral gluteal skin
Anterior cutaneous branch supplies what area of skin? - Answer - Pubic
region
Ilioinguinal n. arises from which nerve root? - Answer - Anterior ramus
of L1
Ilioinguinal n. divides from the trunk at the edge of what muscle? -
Answer - Psoas major m.
Ilioinguinal n. is smaller than and inferior to what nerve? - Answer -
Iliohypogastric n.
What is the path of the ilioinguinal n.? - Answer - Crosses anterior to
quadratus lumborum m.
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