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.

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Solution

(i) tricuspid
(ii) bicuspid
(iii) pulmonary
(iv) aortic

Valves function to prevent backflow of blood and maintain a unidirectional circulation of blood within the body. The tricuspid valve separates the right atrium from the right ventricle whereas the bicuspid valve separates the left atrium and left ventricle. The pulmonary valve prevents the backflow of deoxygenated blood from the pulmonary artery into the right ventricle while the aortic valve prevents the backflow from aorta into the left ventricle.

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Similar questions

Q. Match the items given in Column I with those in Column II and select the correct option given below:

	Column I		Column II
(a)	Tricuspid valve	(i)	Between left atrium and left ventricle
(b)	Bicuspid valve	(ii)	Between right ventricle and pulmonary artery
(c)	Semilunar valve	(iii)	Between right atrium and right ventricle

Q. Match the items given in column I with those in column II and select the correct option given below:

Column I	Column II
a. Tricuspid valve	(i) Between left atrium and left ventricle
b. Bicuspid valve	(ii) Between right ventricle and pulmonary artery
c. Semilunar valve	(iii) Between right atrium and right ventricle

Q. Choose the correct statements :
I. The heart is a hollow organ present in the thoracic cavity
II. The pulmonary veins are guarded by valves which prevent the backflow of blood.
III. The walls of the left ventricle are about three times thicker than the right ventricle.
IV. Pulmonary arteries carry deoxygenated blood to the lungs
V. The foetal heart has an opening between two atria

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)

The valve present between the right atrium and the right ventricle is the
(a) tricuspid valve (b) bicusid valve (c) semi - lnar valve (d) mitral valve

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