Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: What occurs at the circled label “4” on the graph?

The path of blood flow within the systemic vascular system is:

Each of the following will cause an increase in blood pressure except

Hypotension is diastolic blood pressure below 100 mm Hg.

Increased levels of carbon dioxide in the blood will result in decreased

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

The left ventricle pumps blood to the

During exercise,

Which of the following changes does not occur during exercise compared to rest?

Figure 20-2 Cardiac Cycle Use Figure 20-2 to answer the following questions: What is occurring in the left atrium at the circle labeled “2” on the graph?