Which blood vessels are the smallest, consisting of only a single layer of epithelial cells?
A) Arteries
B) Bronchioles
C) Capillaries
D) Veins

Question

Quizplus · Accepted Answer

Capillaries are the smallest blood vessels in the human body, consisting of only a single layer of epithelial cells. They connect arterioles and venules, allowing for the exchange of gases, nutrients, and waste products between the bloodstream and surrounding tissue. Arteries, veins, and bronchioles are all larger and have a more complex structure than capillaries.

Which Blood Vessels Are the Smallest, Consisting of Only a Single