What structural component of cardiac muscle cells allows for electrical current to flow from cell to cell? Cardiac muscle shares this feature with skeletal muscle. YOU MIGHT ALSO LIKE...
Which statement regarding cardiac muscle structure is accurate? Cardiac muscle cells are independent of one another both structurally and functionally. Cardiac cells possess few mitochondria. Cardiac cells are long, cylindrical, and multinucleate. Myofibrils of cardiac muscle tissue vary in diameter and branch extensively.
Cardiac muscle cells are independent of one another both structurally and functionally. Cardiac cells possess few mitochondria. Cardiac cells are long, cylindrical, and multinucleate. Myofibrils of cardiac muscle tissue vary in diameter and branch extensively.
Myocardium (composed of cardiac muscle and a dense network of connective tissue) Which layer of the heart wall contracts and is composed primarily of cardiac muscle tissue? pulmonary veins (transport oxygen-enriched blood from the lungs to the left atrium) Which of these vessels returns blood to the left atrium of the heart? superior vena cava
atrioventricular (AV) valve is NOT part of the intrinsic conduction system of the heart and therefore the correct answer.
the SA nodeIn a normal functioning heart, the SA node is the pacemaker that sets the heart rate and is the starting point of the conduction system. The pacemaker cells within the SA node generate action potentials at 60-100 beats per minute.
These muscle cells send signals to the rest of the heart muscle causing a contraction. This group of muscle cells is called the cardiac conduction system. The main parts of the system are the SA node, AV node, bundle of HIS, bundle branches, and Purkinje fibers.
A system of specialized non-contractile cardiac muscle cells without sarcomeres which conduct electrical impulses that stimulate the heart to beat (contractile muscle cells).