question_answer

Which of the following statements is/are correct about heart?

(i) When the left atrium contracts, the oxygenated blood is pushed into the left ventricle through a valve.

(ii) When left ventricle contracts, the oxygenated blood is forced into pulmonary vein.

(iii) When the right atrium contracts, oxygenated blood is pushed into the right ventricle.

(iv) When the right ventricle contracts, the deoxygenated blood is pumped into the lungs through pulmonary artery.

A) (i) and (ii)

B) (ii) and (iii)

C) (iii) and (iv)

D) (i) and (iv)

E) None of these