Skeletal, cardiac, and smooth muscle all have
A) A bands and I bands.
B) transverse tubules.
C) gap junctions.
D) motor units.
E) thick and thin filaments.

Question

Quizplus · Accepted Answer

All three types of muscles have thick and thin filaments made of myosin and actin respectively. A bands and I bands are specific to skeletal and cardiac muscles but smooth muscles have dense bodies instead. Transverse tubules and gap junctions are only found in cardiac and some smooth muscle cells. Motor units are only present in skeletal muscles.

Skeletal, Cardiac, and Smooth Muscle All Have