Unknown Which of the following statements is true of cardiac development? A During formation of the heart loop, a single-tube heart remains suspended by a complete dorsal mesocardium B The atria are represented by cranial portions of endocardial tubes C The heart bends into an S-shape because the caudal regions of the endocardial tubes grow faster than the cranial regions D The left and right sides of the heart result directly from the side-by-side apposition 💡 Explanation Which of the following statements is true of cardiac development? ✓ Correct Answer: C. The heart bends into an S-shape because the caudal regions of the endocardial tubes grow faster than the cranial regions