The surface of an alveolus in a mammal is well supplied with tiny blood vessels known as? By: Sunday|Published on: Sep 10|Categories: Biology JAMB| 0 comments A. arterioles B. venules C. arteries D. capillaries Correct Answer: Option D – capillaries Users Also Read These:When an animal has a dark-coloured dorsal surface…Which of the following blood vessels carries…The increase in width of blood vessels in the…Which of the following blood vessels have valves?Which of the following substance from the mother's…SEE ALSO The animals that move by means of flagella include?