Question 44

The primary purpose of this text is to inform the reader how the cardiovascular system regulates blood pressure.

This text explains the mechanisms and components involved in the regulation of blood pressure within the cardiovascular system, specifically detailing the roles of baroreceptors, chemoreceptors, and the kidneys.

A) To inform the reader about the dangers of high blood pressure

This option is incorrect because the text does not focus on the dangers associated with high blood pressure. Instead, it concentrates on the regulatory mechanisms that manage blood pressure rather than the consequences of elevated levels.

B) To inform the reader how high blood pressure leads to a higher risk of a heart attack

This option is also incorrect. While high blood pressure can lead to health risks such as heart attacks, the extract does not discuss these risks. Its primary focus is on how blood pressure is regulated, not the implications of high blood pressure.

C) To inform the reader how the cardiovascular system regulates blood pressure

This option is correct as the text provides a detailed explanation of the various components and their functions in maintaining blood pressure, including the heart's role and the involvement of baroreceptors, chemoreceptors, and kidneys.

D) To persuade the reader that controlling one's blood pressure is important

This option is incorrect because the text does not attempt to persuade or advocate for blood pressure control. It simply informs the reader about the physiological processes involved in blood pressure regulation without making a case for why it should be controlled.

Conclusion

The correct answer, C, accurately reflects the text's purpose of explaining the regulatory functions of the cardiovascular system concerning blood pressure. All other options fail to capture the main focus of the extract, which is centered on the mechanisms of regulation rather than the consequences of blood pressure levels or persuasive arguments for control.