Neet Solved Paper 2013 Question 60

Question: Figure shows schematic plan of blood circulation in human with labels A to D. Identify the label and give its function/s

Options:

A) A-pulmonary vein-takes impure blood from body-parts, $ pO _2=60,mmHg $

B) B-pulmonary artery-takes blood from heart to lungs, $ pO _2=90,mmHg $

C) C-vena cava-takes blood from body parts to right auricle, $ pCO _2=45,mmHg $

D) D-dorsal aorta-takes blood from heart to body parts, $ pO _2=95,mmHg $

Show Answer

Answer:

Correct Answer: C

Solution:

  • The vena cava is responsible for carrying the doxygenated blood from the lower and middle parts of the body to the right atrium. The partial pressure of carbon dioxide in vena cava or veins is equal to 45 mm Hg. The partial pressure of oxygen in arterial blood is equal to 100 mm Hg.