question_answer

Figure shows schematic plant 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,\[P{{O}_{2}}=60\,mm\,Hg\]

B)  B-Pulmonary artery - takes blood from heart to lungs,\[P{{O}_{2}}=90\,mm\,Hg\]

C)  C-Vena Cava - takes blood from body parts to right auricle,\[PC{{O}_{2}}=45\,mm\,Hg\]

D)  D-Dorsal aorta - takes blood from heart to body parts, \[P{{O}_{2}}=95\,mm\,Hg\]