Anatomy Muscle of expiration is/are -a) Diaphragmb) Internal intercostalc) External intercostald) Rectus Abdominis A ac B bd C cd D ab 💡 Explanation Muscle of expiration is/are -a) Diaphragmb) Internal intercostalc) External intercostald) Rectus Abdominis ✓ Correct Answer: B. bd