Question

question 12
the inferior vena cava returns blood to the right atrium of the heart.
true
false
question 13
veins carry blood away from the heart.
true
false
question 14
which is smallest:
capillary
artery
vein
arteriole
venule

Explanation:

• For Question 12: The inferior vena cava is a large vein that returns de - oxygenated blood from the lower body to the right atrium of the heart, so it's true.
• For Question 13: Arteries carry blood away from the heart, while veins carry blood towards the heart, so the statement is false.
• For Question 14: Capillaries are the smallest blood vessels. They connect arterioles and venules and allow for the exchange of substances between blood and tissues.

Answer:

Question 12: True
Question 13: False
Question 14: Capillary