The figure shows blood circulation in humans with labels A to D. Select the option which gives correct identification of label and functions of the part.
Correct answer: C. D-Pulmonary vein-Takes oxygenated blood to heart, pO2 = 95 mmHg.
- A. B-Capillary-Thin without muscle layer and wall two cell layers thick
- B. C-Vein-Thin walled and blood flows injerks/spurts
- C. D-Pulmonary vein-Takes oxygenated blood to heart, pO2 = 95 mmHg.
- D. A-Artery-Thick walled and blood flows evenly
Explanation
Two pulmonary veins from each lung transport the oxygenated blood to the left atrium.
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