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, Pco2 = 45 mm Hg

(b) D - Dorsal aorta - takes blood from heart to body parts, Po2 = 95 mm Hg

(c) A - Pulmonary vein - takes impure blood from body parts to heart. Po2 = 60 mm Hg

(d) B - Pulmonary artery - takes blood from heart to lungs, Po2 = 90 mm Hg

Answer 1

The correct option is (a) C - Vena Cava - takes blood from body parts to right atrium, Pco2 = 45 mm Hg.

Explanation:

In the given figure: A is pulmonary vein which brings pure blood from lungs to left atrium. B is dorsal aorta which carries blood from heart to body parts, C is vena cava which carries impure blood from body parts to right atrium, and D is pulmonary artery which takes impure blood from heart to lungs.