Question

1pt

Which blood vessel allows the exchange of gases within tissues?
A.
vein
B.
capillary
C.
vena cava
D.
aorta

Answer 1

B

Step-by-step explanation:

The exchange of gases, nutrients, and waste between blood and tissue occurs in the Capillaries. Capillaries are tiny vessels that branch out from arterioles to form networks around body cells.

Answer 2

Capillary as it walls are so thin it allows exchange of gases and nutrients