Which of the following statements are true of cardiac muscle (Select all that apply)?
A)Cardiac muscle forms the walls of the chambers of the heart.
B)Intercalated discs are the specialized nuclei of cardiac muscle cells.
C)Cardiac muscle is a type of voluntary muscle.
D)Cardiac muscle cells must receive nerve impulses in order to contract.
E)The cardiac muscle of the valves of the heart pushes blood through.
F)The pumping of the heart moves blood through blood vessels.

Question

Quizplus · Accepted Answer

A) Cardiac muscle forms the walls of the chambers of the heart.
F) The pumping of the heart moves blood through blood vessels. 
These statements are both true. 
B) Intercalated discs are not specialized nuclei of cardiac muscle cells; rather, they are specialized junctions that enable cell-to-cell communication in cardiac muscle. 
C) Cardiac muscle is not voluntary muscle, it is involuntary muscle, meaning it contracts without conscious control. 
D) Cardiac muscle cells do not require nerve impulses in order to contract; instead, they are capable of initiating their own contractions through pacemaker cells. 
E) The cardiac muscle of the valves of the heart does not push blood through; instead, the pressure gradients created by the contraction of the cardiac muscle in the walls of the chambers of the heart are responsible for moving blood through the valves.

Which of the Following Statements Are True of Cardiac Muscle