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Author Question: Which of the following statements is false regarding the pulmonary circulation? a. Pulmonary ... (Read 74 times)

roselinechinyere27m

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on: Jul 16, 2018
Which of the following statements is false regarding the pulmonary circulation?
 
  a. Pulmonary blood flow is highly dependent on gravity.
  b. The pulmonary circulation is a low-pressure system.
  c. Toward the top of the upright lung, blood flow is high.
  d. Toward the top of the upright lung, blood flow is low.

Question 2

Pressures in the pulmonary circulation are lower than those in the systemic circulation because of what characteristic of the pulmonary circulation?
 
  a. Higher resistance than the systemic circu-lation
  b. Less blood flow than the systemic circula-tion
  c. Lower resistance than the systemic circu-lation
  d. More blood flow than the systemic circu-lation


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taylorsonier

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
As a consequence of having a low blood pressure and being susceptible to gravity, blood flow is much higher in the lung bases in resting upright subjects. Gravity-related effects also occur in re-cumbent positions but are less pronounced.

Answer to Question 2

ANS: C
While the entire cardiac output passes through both pulmonary and systemic circuits, the pulmo-nary circulation offers much lower resistance and, as a result, has a much lower blood pressure.


roselinechinyere27m

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Reply 2 on: Jul 16, 2018
Wow, this really help

brbarasa

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Reply 3 on: Yesterday
Excellent

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