Anatomy If C5 ,C6 nerve root is injured, sensations of which pa of upper limb will be lost ? A Thumb and index finger B Little finger C Upper medial pa of arm D Upper medial side of forearm 💡 Explanation If C5 ,C6 nerve root is injured, sensations of which pa of upper limb will be lost ? ✓ Correct Answer: A. Thumb and index finger