The absence of which structure in pulmonary capillaries distinguishes them from those in the kidneys or small intestine?
Show answer and explanation
Correct answer: Fenestrae
Kidney and intestinal capillaries are fenestrated to allow for high rates of fluid and solute transport. Pulmonary capillaries are continuous (non-fenestrated) to better control fluid balance and maintain the integrity of the gas exchange surface.
Keep practicing
More Pulmonary Capillaries questions
- Under electron microscopy, the cytoplasm of the pulmonary capillary endothelial cell appears:
- What is the primary source of blood for the pulmonary capillary beds involved in gas exchange?
- Leukocytes (WBCs) can sometimes be found 'marginally' in pulmonary capillaries. This refers to:
- Which type of capillary is most characteristic of the pulmonary alveolar walls?
- What is the primary function of the pulmonary capillary network within the alveolar septum?
- Which of the following describes the relationship between the pulmonary capillary endothelium and the alveolar epithelium?