Physiology Concerning contraction of the diaphragm: A The nerves that are responsible emerge from the spinal cord at the level of the lower thorax B It tends to flatten the diaphragm C It reduces the lateral distance between the lower rib margins D It causes the anterior abdominal wall to move in 💡 Explanation Concerning contraction of the diaphragm: ✓ Correct Answer: B. It tends to flatten the diaphragm