Which is a typical intercostal nerve?

a. First
b. Second
c. Third
d. Seventh

Intercostal nerves can be divided into atypical and typical intercostal nerves:

• atypical
  • first two intercostal nerves (T1 and T2) in addition to supplying the thorax also give branches to the brachial plexus
  • lowest five intercostal nerves (T7-T11) also supply the abdomen and peritoneum
• typical
• the remaining intercostal nerves (T3-T6) supply only the the thoracic wall

Courtesy: Radiopaedia.org

Ans c. THIRD