Exam 20: The Heart

The following is a list of vessels and structures that are associated with the heart. What is the correct order for the flow of blood entering from the systemic circulation? 1) right atrium 2) left atrium 3) right ventricle 4) left ventricle 5) venae cavae 6) aorta 7) pulmonary trunk 8) pulmonary veins

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What occurs at the circle labeled "3" on the graph?

Hypertension increases ________ causing stroke volume to ________.

The long plateau phase of the cardiac muscle action potential is due to

Figure 20-1 The Heart Use Figure 20-1 to answer the following questions: -Which chamber receives oxygenated blood from the pulmonary circuit?

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: -What volume is labeled "F" on the graph?

Stroke volume depends on all of the following factors except

The function of an atrium is to

The heart pumps approximately ________ liters of blood each day.

The pulmonary valve prevents backward flow into the

The volume of blood ejected from each ventricle during a contraction is called the

Which of the following statements is true regarding cardiac muscle?

Activation of which kind of receptor causes heart rate to increase?

The structure that permits blood flow from the right atrium to the left atrium in the fetal circulation is the

The adult heart is roughly the size of

Pericardial fluid

With each ventricular systole,

The connective tissues of the heart are important for all of the following reasons except

The muscle layer of the heart is the

Which of the following statements is true concerning differences between the right and left ventricles?