PDF chapter test TRY NOW

Solve the following based on the circulatory system in humans.
 
1. Identify the correct term:
Answer variants:
Capillaries
Lungs
Pulmonary artery
Artery
Pulmonary vein
Vein
What does 4 indicate in this picture?  
 
l4.jpg
 
2.  From the above circuit fill up the following blanks.
The pulmonary vein carries the blood from theto the
 
3.  Choose the best option:
Which of the following carries oxygenated blood to the heart from the lungs