PDF chapter test TRY NOW

Identify the missing part:
  
Answer variants:
ureter
kidney
right ventricle
right atrium
pulmonary artery
left atrium
aorta
pulmonary vein
renal artery
urethra
bladder
aorta
1. What does 2 indicate in the picture?
 
YC Editorial - Divya (4).png
 
2. What does 2 indicate in the picture?
 
YC Editorial - Divya (11).png