Which of the following correctly represents the chambers of the heart?

4 chambers: 1 atrium and 3 ventricles

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4 chambers: 2 atria and 2 ventricles

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4 chambers: 3 atria and 1 ventricle

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3 chambers: 1 atrium and 2 ventricles

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Solution

The correct option is B
4 chambers: 2 atria and 2 ventricles

The heart has 4 chambers: 2 atria and 2 ventricles which contract and relax in a rhythmic manner. The 4 chambers are isolated from each other by muscular walls and valves which prevent backflow of blood and mixing of oxygenated and deoxygenated blood. Heart is made of involuntary muscles, which means that the functioning of these muscles is not under our control.

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Similar questions

Q. Match the following chambers of the heart with the respective blood vessels:

	Column A		Column B
$1.$	Right atrium	$a .$	Pulmonary vein
$2.$	Left atrium	$b .$	Aorta
$3.$	Right ventricle	$c .$	Superior vena cava
$4.$	Left ventricle	$d .$	Pulmonary artery

Q. Which chamber of the heart has the thickest wall?
(a) Right atrium
(b) Left atrium
(c) Left ventricle
(d) Right ventricle

Q. Go through the following statements:

(i) Lower chambers of the heart are called atria.
(ii) Upper chambers of the heart are called ventricles.
(iii)There are no valves in the heart.

Which among the following option is correct?

Assertion[A]: Atria and ventricles do not contract at the same time.

Reason[R]: This time delay allows proper filling of all the 4 chambers of the heart and results in an efficient pumping of blood.

Q. If a person had two-chambered heart (one atrium, and one ventricle) with the vena cava entering the atrium and the aorta leaving the ventricle then which of the following statement would be correct?

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