A cross-sectional view of a skeletal muscle fiber through the H-zone would show the presence of:: (A) Actin & myosin, (B) Titin & myosin, (C) Actin & titin, (D) Myosin only
Answer is D. H-zone is at the center of the sarcomere. Cross-sectional view through the H-zone will show only thick filaments, as ends of the thin filaments stop sho of the center of the sarcomere.