Identify the correct match.

Column I Column II

A. Right atrium i.Pumps deoxygenated blood into the pulmonary artery

B. Aortic valve ii.Prevents backflow of blood from right ventricle to right atrium

C. Tricuspid valve iii.Receives deoxygenated blood from vena cava

D. Right ventricle iv.Prevents backflow of blood from aorta to ventricle

A) A-ii, B-iii, C-iv, D-i
B) A-i, B-iii, C-ii, D-iv
C) A-ii, B-i, C-iii, D-iv
D) A-iii, B-iv, C-ii, D-i

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Q. Complete the following passage:

Valves function to prevent backflow of blood and maintain a unidirectional circulation of blood within the body. The (i)__________ valve separates the right atrium from the right ventricle whereas the (ii)_____________ valve separates the left atrium and left ventricle. The (iii)___________ valve prevents the backflow of deoxygenated blood from the pulmonary artery into the right ventricle while the (iv)__________ valve prevents the backflow from aorta into the left ventricle.

Question 17
Which of the following statement(s) is/are true about the heart?

(i) Left atrium receives oxygenated blood from different parts of the body while right atrium receives deoxygenated blood from lungs.

(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.

(iii) Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.

(iv) Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.

(a) (i)
(b) (ii)
(c) (ii) and (iv)
(d) (i) and (iii)

Q. Match the following.

Aortic valve	Prevents backflow of blood from right ventricle to right atrium
Tricuspid valve	Prevents backflow of blood from left ventricle to left atrium
Bicuspid valve	Prevents backflow of blood from aorta to ventricle

Q. Match the chambers of the human heart in Column A to its function in Column B.

\begin{matrix} C o l u m n A & C o l u m n B (i) R i g h t a t r i u m & (a) P u m p s d e o x y g e n a t e d b l o o d t o l u n g s (i i) L e f t a t r i u m & (b) R e c e i v e s o x y g e n a t e d b l o o d f r o m l u n g s (i i i) R i g h t v e n t r i c l e & (c) P u m p s o x y g e n a t e d b l o o d t o t h e b o d y (i v) L e f t v e n t r i c l e & (d) R e c e i v e s d e o x y g e n a t e d b l o o d f r o m t h e b o d y \end{matrix}

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Column I	Column II
A. Right atrium	i.Pumps deoxygenated blood into the pulmonary artery
B. Aortic valve	ii.Prevents backflow of blood from right ventricle to right atrium
C. Tricuspid valve	iii.Receives deoxygenated blood from vena cava
D. Right ventricle	iv.Prevents backflow of blood from aorta to ventricle