Heart 2: AP conduction and regulation, Myocardial contraction, ECG

Question 1

Describe the differences in cell structure and organization between cardiac, skeletal, and smooth muscle.

Answer 1

Cardiac and skeletal muscles are striated. Cardiac muscle cells are small, mono-nucleated, possibly branched cells.

Smooth muscle is unstriated. Skeletal muscle cels are long, unbranched, and multi-nucleated.