Innervation of the Abdominal Wall

The skin of the anterior abdominal wall is innervated by the ventral rami of the lower five or six thoracic (tho-racoabdominal) spinal nerves that continue from the intercostal spaces into the abdominal wall (Fig. 1.5). The anterolateral abdomen also receives nerve fibers from the subcostal, iliohypogastric, and ilioinguinal nerves.

A typical intercostal nerve runs across the deep surface of the internal intercostal muscle and membrane between the internal and innermost intercostal muscles. It then continues in the costal groove below the in

T 10 intercostal nerve T 11 intercostal nerve T 12 intercostal nerve

Intercostal Nerves

Fig. 1.5. Course of the thoracoabdominal nerves

tercostal artery. Each intercostal nerve is connected to an adjacent sympathetic ganglion by a white communicating ramus conveying presynaptic sympathetic fibers, and by a gray communicating ramus that transmits postsynaptic sympathetic fibers.

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Dynamic Six Pack Abs

Dynamic Six Pack Abs

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Responses

  • edilio palerma
    What Are The Intercostal Nerves?
    8 years ago
  • fesahaye sebhat
    Where is the intercostal nerve picture?
    7 years ago

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