Which of these muscles is most frequently affected in childhood poliomyelitis?: (A) Quadriceps, (B) Deltoid, (C) Tibialis anterior, (D) Biceps
Answer is A. Ans. A. QuadricepsThe most frequently affected muscles in poliomyelitis (in order of the frequency with which they are affected)(Lower limb muscles - Quadriceps; tibialis anterior; peroneal muscles) > (Upper limb muscles - Deltoid; triceps; biceps) > (Trunk - abdominal muscles; back; intercostals; diaphragm)