Internal oblique innervation is provided by which two nerves?

Internal oblique innervation is provided by which two nerves?

• A. Iliohypogastric nerve
• B. Subcostal nerve
• C. Iliohypogastric nerve and ilioinguinal nerve
• D. Ilioinguinal nerve

Answer: (C)

Nerve supply to the internal oblique comes from nerves of the lower abdominal wall, specifically the branches from L1. The two nerves that provide motor to this muscle are the iliohypogastric and ilioinguinal nerves. They originate from the lumbar plexus and travel between the internal oblique and transversus abdominis, giving off motor branches to the internal oblique (as well as to the transversus abdominis) along their course. That shared innervation pattern is why these two nerves are the correct pair for the internal oblique. Other nerves like the thoracoabdominal or subcostal contribute to the region as well, but the direct pair most closely associated with innervating the internal oblique are the iliohypogastric and ilioinguinal nerves.

Nerve supply to the internal oblique comes from nerves of the lower abdominal wall, specifically the branches from L1. The two nerves that provide motor to this muscle are the iliohypogastric and ilioinguinal nerves. They originate from the lumbar plexus and travel between the internal oblique and transversus abdominis, giving off motor branches to the internal oblique (as well as to the transversus abdominis) along their course. That shared innervation pattern is why these two nerves are the correct pair for the internal oblique. Other nerves like the thoracoabdominal or subcostal contribute to the region as well, but the direct pair most closely associated with innervating the internal oblique are the iliohypogastric and ilioinguinal nerves.