Injury occurs at C7 root, in what pa of arm, sensation will be lost: (A) Upper medial, (B) Lower medial, (C) Posterior, (D) None of the above
Answer is D. BD CHAURASIA S HUMAN ANATOMY SIXTH edition Vol 1 Arm is not supplied by cranial nerves It is mainly supplied by ulnar and median nerve So an injury to root of C 7 is most unlikely to cause loss of sensation of arm