Q109
The smallest blood vessels which are one-cell thick, are called ________
A.
Vena cava
B.
Arteries
C.
Veins
D.
Capillaries
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
A capillary is a small blood vessel from 5 to 10 micrometres (μm) in diameter, and having a wall one endothelial cell thick. They are the smallest blood vessels in the body: they convey blood between the arterioles and venules.