Which of the following statements regarding cardiac muscle is true?
A)Dense bodies anchor thin filaments.
B)Fibers lack I and A bands.
C)Intercalated discs contain gap junctions.
D)Fibers lack branches.

Question

Quizplus · Accepted Answer

Intercalated discs in cardiac muscle contain gap junctions, specialized structures that allow for communication and coordination between adjacent cells. This is important because cardiac muscle cells must contract in a coordinated fashion to pump blood effectively. Dense bodies anchor thin filaments in smooth muscle, fibers lack I and A bands in skeletal muscle, and fibers do have branches in cardiac muscle.

Which of the Following Statements Regarding Cardiac Muscle Is True