Question

The given figure shows schematic plan of blood circulation in humans with labels A to D. Identify the labels along with their functions and select the correct option.

• A. C – Vena Cava – takes blood from body parts to right atrium,
  $P_{{\mathrm{CO}}_2}$ = 45 mm Hg
• B. D – Dorsal aorta – takes blood from heart to body parts,
  $P_{O_2}$= 95 mm Hg
• C. A – Pulmonary vein – takes impure blood from body parts to heart,
  $P_{O_2}$= 600 mm Hg
• D. B – Pulmonary artery – takes blood from heart to lungs,
  $P_{O_2}$= 90 mm Hg.

Answer 1

The correct option is A C – Vena Cava – takes blood from body parts to right atrium,

$P_{{\mathrm{CO}}_2}$ = 45 mm Hg
A - Pulmonary vein - transfers the oxygenated blood from the lungs to the heart
$P_{O_2}$= 95 mm Hg.

B - Dorsal aorta - takes blood from heart to body parts,
$P_{O_2}$= 95 mm Hg.

C - Vena Cava - brings in blood from body parts to right atrium
$P_{{\mathrm{CO}}_2}$ = 45 mm Hg.

D - Pulmonary artery – transfers deoxygenated blood from heart to lungs for oxygenation.
$P_{O_2}$= 40 mm Hg.