Answer
Because heart and nerve cells do not divide, these injuries normally do not heal. In the instance of injuries to smooth muscles, because smooth muscle cells can divide, the injuries can be healed by replacing the damaged cells with new ones.
Work Step by Step
Because heart and nerve cells do not divide, these injuries normally do not heal. In the instance of injuries to smooth muscles, because smooth muscle cells can divide, the injuries can be healed by replacing the damaged cells with new ones.