In a human body A is a pumping organ.From lungs blood vessels B with oxygenated blood enters upper C part of left chamber of the organ. When C chamber is pumped contractsblood flows into D lower left chamber.D chm]amber contractsblood is pumped to all parts of the body except lungs through blood vessel E. Deoxygenated blood from body parts is collected bby blood vessel F and opens upper G right chamber. This chamber contracts blood flows H lower chamber . Lastly H contracts deoxygenated blood sent to lungs by blood vessel I.

a. 'A' represents what organ?
b. i.B ii.E ii. F and iv. I are what blood vessels? Write their names.
c. i.C ii. D are what chambers?
d. i. G ii. H are what chambers ? write thrie names .