Exam 28: Heart

The structural components of the circulatory system include the:

To support maximum muscle contraction of the heart muscle, the blood flow to the heart is highest during the strongest contractions.

Match each term related to heart circulation with its corresponding location or description. -Heart chamber that receives blood from the pulmonary vein

The cardiovascular system is sometimes called the circulatory system.

Match each ECG wave or complex with the corresponding action in the cardiac cycle. -Ventricular depolarization

Which part of the conduction system of the heart is referred to as the pacemaker?

Select one heart valve. Give its name, location, and function.

If the AV node were forced to assume pacemaker activity, the resulting pulse rate would be _____ beats per minutes.

Which of the following statements is not true about the nerve supply to the heart?

The first heart sound heard, or the "lub" sound, is caused by the _____ and the _____ valves closing.

The cardiac plexus contains both parasympathetic fibers and sympathetic fibers.

The epicardium and the visceral layer of the serous pericardium are the same structure.

The normal pattern of impulse conduction through the heart is:

Blood in the left atria has just come from the lungs.

Blood passing through a semilunar valve will enter a heart chamber.

Draw a normal ECG. Identify the physiological activity within the heart during each ECG deflection and interval.

Match each ECG wave or complex with the corresponding action in the cardiac cycle. -Ventricular repolarization

Chordae tendineae are cordlike structures that connect semilunar valves to papillary muscles.

The visceral pericardium adheres to the surface of the heart.

Chordae tendineae are associated with which structure?