Exam 23: Circulation

Blood is pumped from the heart to the lungs by the

Which of the following statements about erythrocytes is true?

Which of the following is characteristic of the circulatory system of arthropods?

Which of the following describes the stage of the cardiac cycle shown?

After reading the paragraphs below, answer the questions that follow. 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 figure below 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?

Which part of this figure depicts a pulmonary artery?

Sometimes when a person in a movie is stabbed or cut, blood forcefully sprays out of the wound. This is realistic only if the severed vessel is under a high degree of pressure. Which of the following vessels, if severed, would result in the most forceful spray of blood?

After reading the paragraphs below, answer the questions that follow. 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 figure below 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. -What part of the diagram represents diastole?

Imagine that blood did not contain any dissolved proteins. What would likely happen when this abnormal blood flows through a capillary bed?

Arteries are distinguished from veins based on all of the following features except

After reading the paragraphs below, answer the questions that follow. 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 figure below 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 on the diagram does the aortic valve (the semilunar valve that separates the left ventricle and the aorta)open?

After reading the paragraph below, answer the questions that follow. Ron and Tiffany are studying circulatory system function. They designed an experiment to test whether the diameter of a tube affects the rate of flow through the tube. In their experiment, they ran water from a large container through five tubes with different diameters for exactly 30 seconds for each tube. They measured the volume of liquid that passed through the tube during the 30-second period, testing each tube three times and pouring the water back into the container after each test. The results of the experiment are shown in the following table. -Which statement best summarizes the results of the experiment?

After reading the paragraph below, answer the questions that follow. Ron and Tiffany are studying circulatory system function. They designed an experiment to test whether the diameter of a tube affects the rate of flow through the tube. In their experiment, they ran water from a large container through five tubes with different diameters for exactly 30 seconds for each tube. They measured the volume of liquid that passed through the tube during the 30-second period, testing each tube three times and pouring the water back into the container after each test. The results of the experiment are shown in the following table. -The results suggest that the smallest flow volume would be found in the ________ of the human body.

Which of the following molecules is least likely to be able to pass through a capillary wall?

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?

Which of the following can increase red blood cell concentration in a unit of blood?

What type of blood vessel is solely responsible for exchange between the blood and the interstitial fluid?

Cells make up about what percentage of total blood volume?

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

The two basic types of circulatory systems that have evolved over time are