The spinal levels that supply the muscles of the anterior abdominal wall extend from which to which?

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Multiple Choice

The spinal levels that supply the muscles of the anterior abdominal wall extend from which to which?

Explanation:
The muscles of the anterior abdominal wall are innervated by nerves that run from the lower thoracic to the lumbar levels: the thoracoabdominal nerves (continuations of the intercostal nerves T7–T11) and the subcostal nerve (T12), with additional contribution from the iliohypogastric and ilioinguinal nerves (from L1). Putting these together, the motor supply extends from T7 down to L1. That’s why the correct range is from T7 to L1.

The muscles of the anterior abdominal wall are innervated by nerves that run from the lower thoracic to the lumbar levels: the thoracoabdominal nerves (continuations of the intercostal nerves T7–T11) and the subcostal nerve (T12), with additional contribution from the iliohypogastric and ilioinguinal nerves (from L1). Putting these together, the motor supply extends from T7 down to L1. That’s why the correct range is from T7 to L1.

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