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Home Q & A Board Biology-Related Homework Help General Biology
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dskmvld dskmvld
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4 years ago
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 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.




What part of the diagram represents ventricular diastole?

▸ point B

▸ point C

▸ the line between points C and D

▸ the line between points A and B
Textbook 
Campbell Biology: Concepts and Connections

Campbell Biology: Concepts and Connections


Edition: 8th
Authors:
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wasanwasan
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4 years ago
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wrote...
#2
4 years ago
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 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?

▸ point A

▸ point B

▸ point C

▸ point D
all is normal
wrote...
#3
4 years ago
point C
wrote...
#4
4 years ago
Brilliant
all is normal
wrote...
#5
4 years ago
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 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 on the diagram does the aortic valve (the semilunar valve that separates the left ventricle and the aorta) open?

▸ point A

▸ point B

▸ point C

▸ point D
wrote...
#6
4 years ago
point B
wrote...
#7
4 years ago
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 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?

▸ 70 mL

▸ 35 mL

▸ 135 mL

▸ 65 mL
wrote...
#8
4 years ago
70 mL
wrote...
#9
4 years ago
This helped my grade so much
wrote...
#10
4 years ago
Perfect
wrote...
#11
4 years ago
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 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.




If the time it takes to go around the loop is 1 second, what is the cardiac output in units of liters per minute?

▸ 8.1 L/min

▸ 7.0 L/min

▸ 4.2 L/min

▸ 3.9 L/min
wrote...
#12
4 years ago
4.2 L/min
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