Question

Which one of the following differentiates cardiac muscles from skeletal muscles

• A. Centrally located single nucleus
• B. Fewer mitochondria
• C. Difference in myofibrils
• D. Fewer myosin and actin bands

Answer 1

The correct option is A

Centrally located single nucleus

$\begin{array}{cc}\text{Skeletal Muscles}& \text{Cardiac Muscles}\\ \text{Voluntary}& \text{Involuntary}\\ \text{Nerve supply from central nervous system}& \text{Nerve supply from brain and autonomic nerve supply}\\ \text{Attached to bone via tendon or each other via aponeurosis}& \text{Walls of the heart}\\ \text{Body movement}& \text{Pumping of blood away from the heart}\\ \text{Rapid contraction but tire quickly}& \text{Rapid contraction and tireless}\\ \text{Non-branching}& \text{Branching}\\ \text{Multinucleated cells}& \text{Uninucleated cells}\end{array}$