Which statement regarding cardiac muscle structure is accurate?

-cardiac cells are long, cylindrical, multinucleate

-cardiac cells possess few mitochondria

-cardiac muscle cells are independent of one another both structurally and functionally

-myofibrils of cardiac muscle tissue vary in diameter and branch extensively

Option A, Cardiac cells are long, cylindrical, multinucleate

Explanation:

Cardiac muscle cells have multiple nucleus and are long and striates. They have cylindrical shape that lacks branching. These cells connect with each other to form long fibers.

They have high mitochondrial density with approximately 5000 mitochondria per cell. These cells are not structurally and functionally independent. Structurally they connect with each other through anchoring junctions and form long fibres for transmission. The diameter of myofibrils ranges from 1-2 micrometer only

Hence, option A is correct