Which of the following enhances pulmonary blood flow? A) Decreased systemic vascular resistance B) Increased systemic blood flow C) Decreased cardiac output D) Increased pulmonary... Which of the following enhances pulmonary blood flow? A) Decreased systemic vascular resistance B) Increased systemic blood flow C) Decreased cardiac output D) Increased pulmonary blood pressure
Understand the Problem
The question is asking which option contributes to an increase in blood flow specifically to the lungs, known as pulmonary blood flow. This relates to cardiovascular physiology and factors influencing blood circulation.
Answer
Decreased systemic vascular resistance enhances pulmonary blood flow.
Decreased systemic vascular resistance enhances pulmonary blood flow.
Answer for screen readers
Decreased systemic vascular resistance enhances pulmonary blood flow.
More Information
Decreasing systemic vascular resistance reduces the workload on the heart, allowing more efficient blood flow, including into the pulmonary circulation, thereby enhancing pulmonary blood flow.
Tips
A common mistake is thinking increased pulmonary blood pressure directly increases flow. However, it could also increase resistance and workload, potentially decreasing flow.
Sources
- Factors which affect pulmonary vascular resistance - derangedphysiology.com
- Vascular resistance - Wikipedia - en.wikipedia.org
- Physiology - Courses Respiratory Mgl3 - LSU School of Medicine - medschool.lsuhsc.edu
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