Dental According to resistance apex locators, the resistance offered by periodontal ligament and oral mucous membrane is: A 6.5 K ohms B 5.5 K ohms C 4.4 K ohms D 3.5 K ohms 💡 Explanation According to resistance apex locators, the resistance offered by periodontal ligament and oral mucous membrane is: ✓ Correct Answer: A. 6.5 K ohms