Exam 12: The Heart

The term for relaxation of the chambers of the heart is:

The pulmonary semilunar valve prevents backflow of blood from the ____ to the ____.

For the myocardium,the most important substance in the blood is ____________________.

The difference between resting cardiac output and maximum exercise cardiac output is the:

The percent of the blood in a ventricle that is pumped out during systole is called the ____________________.

The heart rate is decreased by:

In the cardiac cycle,all blood from the ventricles to the arteries must be ____________________.

Which of the following statements are true of the cardiac conduction pathway and electrical activity of the myocardium? (Read carefully and select all of the correct statements.)

The function of the serous fluid of the pericardial membranes is to ____________________.

The ejection fraction of the heart is the percent of the:

The middle layer of the pericardial membranes is the:

The inner layer of the pericardial membranes is the:

The sensory nerves for the carotid and aortic receptors are the:

Which of the following statements are true of the great vessels of the heart? (Read carefully and select all of the correct statements.)

During strenuous exercise,cardiac output is 13,650 mL and stroke volume is 105 mL.What is the pulse?

The right ventricle pumps blood into the ____ to the ____.

The heart is located in an area called the ____________________ and is protected by the ____________________.

During strenuous exercise,cardiac output is 16,000 mL and stroke volume is 110 mL.What is the pulse?

The endocardium is the ____________________ of the heart,and its function is to ____________________.

During the cardiac cycle,when the atria are in systole,the ventricles are in ____________________.