Exam 12: The Cardiovascular System: The Heart

The first heart sound ("lubb")is produced as the atrioventricular valves ________ and the semilunar valves ________.

Small tributaries from the branches of the coronary arteries form interconnections called

The release of norepinephrine at synapses in the myocardium results in

Abnormal patterns of cardiac activity are known as

The T wave of an ECG corresponds to

The semilunar valve of the left side of the heart prevents backflow from the

Regarding blood volume reflexes,"filling time" is defined as the

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label G represents the

The primary function of the venae cavae includes which of the following?

The function of an atrium is to

Which structural feature of cardiac muscle cells enables action potentials to travel rapidly from cell to cell?

The loose-fitting sac around the heart is lined by the

Which of the following is true regarding normal cardiac muscle?

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label M represents the

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label I represents the

The muscular ridges found on the internal surfaces of the ventricles are collectively called (the)

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label E represents the

In ________,the cusps of the bicuspid valves do not close properly.

The wall between the atria is called the

Under conditions of hypocalcemia,