How does cardiac muscle resemble skeletal muscle?

This is your answer I hope this answers your question and that you have amice rest of your Sunday: Cardiac muscle is an exception among involuntary muscles, which are characteristically smooth. Its contractile fibers resemble those of skeletal muscle but are only one third as large in diameter, are richer in sarcoplasm, and contain centrally located instead of peripheral nuclei.

It should be cryosphere and hydrosphere