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Gross Anatomy - Autonomics and Referred Pain Exam With complete solution–Expert Verified | Latest Questions 2025

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Gross Anatomy - Autonomics and Referred Pain Exam With complete solution–Expert Verified | Latest Questions 2025

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Gross Anatomy - Autonomics and Referred Pain Exam With
complete solution–Expert Verified | Latest Questions 2025

What is the subcostal nerve? - T12 VR
Inferior to 12th rib
At superior aspect of quadratus lumborum

Describe the path of L1 VR - Crosses laterally around the middle of quadratus
lumborum
Separates as iliohypogastric and ilioinguinal nn.
^separation may occur as far ant. as ASIS

What does the iliohypogastric n. do? - Innervates skin of lower abdomen

What does the ilioinguinal n. do? - Innervates internal oblique and skin of external
genitalia

What is the lateral femoral cutaneous nerve? - VR L2-3
Courses over iliacus m.
Innervates lateral thigh sensation

What is the genitofemoral n.? - VR L1-2
Pierces anterior part of psoas major m.
Genital branch innervates cremaster muscle and external genitalia sensation
Femoral branch supplies upper thigh sensation

What is the femoral n.? - VR L2-4
Emerges lateral to psoas m.
Innervates lower limb skin and muscles

What is the obturator n.? - VR L2-4
Emerges medial to psoas m. within pelvic cavity
Innervates lower limb skin and muscles

What is the sympathetic chain/trunk? - Extends bilaterally the length of the vertebral
column
Contains network (plexuses) of autonomic fibers on abdominal vessels

What are the functional components of spina nerves? - GSA
GSE
GVE
GVA

Are GVE part of ANS? - Yes

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