Surgery Following block dissection of the neck, a person is unable to move his head upward and to side ways. Which of the following nerve is injured A Vagus B Spinal accessory nerve C Glossopharyngeal nerve D Cranial pa of accessory nerve 💡 Explanation Following block dissection of the neck, a person is unable to move his head upward and to side ways. Which of the following nerve is injured ✓ Correct Answer: B. Spinal accessory nerve