The transversus abdominus muscle is innervated by the . The transversus abdominus muscle is innervated by the . left scapular nerve intercostals nerves thoracic nerve inguinal nerve

The transversus abdominus muscle is innervated by the intercostals nerves

Explanation:

The intercostal nerves are somatic nerves that start at anterior divisions of spinal nerves. These form part of the somatic nervous system, which enable voluntary control of the body's ability to move. Beginning at the anterior rami  T1  they terminate at the anterior rami T11 of  thoracic spinal nerves.

The somatic nervous system, conducts sensory and motor information between the peripheral nervous system- this includes sensory organs such as the eyes; and the central nervous system; and the autonomic nervous system (ANS) which mediates involuntary functions like breathing, blood flow and  the pulse.