Which diagnostic tool uses sound waves to visualize the heart?

I think the answer is, Echocardiograph :)

Echocardiograph. Echocardiograph is a machine that uses sound waves to visualize the heart and the valves.

Ifound this on google “concept 13: meiosis ii: telophase ii. a nuclear envelope forms around each set of chromosomes and cytokinesis occurs, producing four daughter cells, each with a haploid set of chromosomes. a nuclear envelope forms around each set of chromosomes.” i hope this you for what your looking for.