Question
Biology Question on Circulatory System
Figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.
A
A - Pulmonary vein - takes impure blood from body parts, PO2 = 60 mm Hg
B
B - Pulmonary artery - takes blood from heart to lungs, PO2 = 90 mm Hg
C
C-Vena Cava - takes blood from body parts to right auricle, PCO2 = 45 mm Hg
D
D-Dorsal aorta - takes blood from heart to body parts, PO2 = 95 mm Hg
Answer
C-Vena Cava - takes blood from body parts to right auricle, PCO2 = 45 mm Hg
Explanation
Solution
The correct option is (C): C-Vena Cava - takes blood from body parts to right auricle, PCO2 = 45 mm Hg.