The anterior and lateral cutaneous branches of the intercostal nerves provide innervation to which regions?

The anterior and lateral cutaneous branches of the intercostal nerves specifically innervate the skin on the anterior and lateral aspects of the thorax. The intercostal nerves originate from the thoracic spinal nerves and travel along the ribs, providing sensory innervation to the skin in these regions. The anterior cutaneous branches primarily supply the skin over the sternum and nearby structures, while the lateral cutaneous branches extend laterally, innervating the skin on the sides of the thorax. This distribution is consistent with the anatomical arrangement of the intercostal nerves and their branches, which aim to supply sensation to the thoracic wall, a critical area for various functions including respiration and protecting underlying structures.