Question

Which of the following is NOT a difference between cardiac and skeletal muscle? Which of the following is NOT a difference between cardiac and skeletal muscle? The plasma membranes of cardiac muscle cells interlock, but skeletal muscle fibers are independent. Cardiac muscle does not use the sliding filament mechanism for contraction; skeletal muscle does. Cardiac muscle cells contain more mitochondria than do skeletal muscle cells.

Answer 1

The heart has _____ chambers and _____ valves.

2; 2

4; 4

2; 4

4; 2

Step-by-step explanation: