Exam 23: Circulation

Which of the following statements about mammalian circulatory systems is false?

The liquid part of blood is called

To view the path of blood flow through the heart and body, scientists and physicians perform an angiogram by injecting a dye into the blood and monitoring its movement. Imagine that this dye was injected into the pulmonary vein. Which of the following is the correct order of structures that the dye will flow through immediately after the pulmonary vein?

In mammals, which of the following vessels transports oxygenated blood from the lung back to the heart?

The anterior interventricular artery supplies a portion of the heart wall with oxygenated blood. Suppose that blood is flowing through a healthy region of this artery but then flows through a region that is atherosclerotic. What will happen to blood flow when it reaches the atherosclerotic region?

As blood moves away from the heart toward the tissues, the relative size of blood vessels ________, the blood pressure ________, and the velocity of blood flow ________.

Stem cells found in the red marrow inside bones

Which of the following animals has a single circuit of blood flow and two heart chambers?

Which of the following statements regarding circulatory systems is true?

To evaluate cardiac function, scientists and physicians measure both the pressure and the volume inside the heart. When both pressure and volume data are plotted on the same graph, the resulting graph is called a pressure-volume loop. To create a pressure-volume loop, a catheter (a thin tube) is inserted into the vessels of the heart, and measurements of both left ventricular pressure and left ventricular volume are taken. The data are plotted on a graph, and cardiac function can then be evaluated from the distribution of the data and the shape of the loop. The following figure shows a typical left ventricle pressure-volume loop for a healthy young adult. The cardiac cycle proceeds counterclockwise. Each complete turn around the loop (for example, starting at point A and ending back at point A) represents one complete cardiac cycle. -At what point of the diagram is the left ventricle filled with the least amount of blood and at the highest pressure?

To evaluate cardiac function, scientists and physicians measure both the pressure and the volume inside the heart. When both pressure and volume data are plotted on the same graph, the resulting graph is called a pressure-volume loop. To create a pressure-volume loop, a catheter (a thin tube) is inserted into the vessels of the heart, and measurements of both left ventricular pressure and left ventricular volume are taken. The data are plotted on a graph, and cardiac function can then be evaluated from the distribution of the data and the shape of the loop. The following figure shows a typical left ventricle pressure-volume loop for a healthy young adult. The cardiac cycle proceeds counterclockwise. Each complete turn around the loop (for example, starting at point A and ending back at point A) represents one complete cardiac cycle. -How much blood is ejected from the left ventricle during one contraction?

Whether there is a net flow of fluid into or out of a capillary at a given point along its length depends upon

Although birds and mammals descended from different ancestors, they both have a four-chambered heart. This is the result of

Cardiac output is defined as the volume of blood pumped by a(n) ________ each time it contracts.

Adaptation to terrestrial life involved major evolutionary changes. The change from gill breathing to lung breathing was accompanied by important changes in the

Oxygen-poor blood is carried from the heart of a mammal to the lungs via the

Which blood vessels have the thinnest walls?

You are taking someone's blood pressure and are listening to sounds of blood flow just under the blood pressure cuff. If this person is hypertensive and has a blood pressure of 140/90, what would be the blood pressure associated with the first sound you hear?

Excessive accumulation of fluid in tissues outside of the blood vessels is called edema. Which of the following scenarios could result in edema?

How long do human red blood cells circulate in the blood before they wear out and have to be replaced?