Question

what is the function of nucleus in cardiac muscle cell

Answer 1

nucleus is a master organelle of every cell

it contains DNA that regulate the cell and gave information what to do

so in cardiac muscle cell nucleus give command to rhythmic contraction and relaxation of muscles

Answer 2

Each myocardial cell contains myofibrils, which are specialized organelles consisting of long chains of sarcomeres, the fundamental contractile units of muscle cells. Cardiomyocytes show striations similar to those on skeletal muscle cells.