Question

The chamber of human heart, which has thickest wall is
A. Right atrium
B. Left atrium
C. Right ventricle
D. Left ventricle

Answer 1

Hint:- Human heart is an organ which is a part of the cardiovascular system, and it is the only
muscle which works continuously throughout the lifetime, it is generally in the size of one’s fist, and it
weights generally 8 to 12 ounces, and it almost pumps a lot of gallons of the blood in its lifetime.

Complete step-by-step solution:-
1. The human heart is located in between the lungs and it is nearer to the left breast bone.
2. Where the heart has 4 chambers, the upper two chambers are called atria, while the lower two
chambers are called ventricles.
3. Atria are of again divided as left and right atria and the ventricles are also divided into left and
right ventricles, so the right and left atria and ventricles are separated by atrioventricular septa.
4. In the body various metabolic activities takes place, where the oxygen are utilized and blood is
depleted with oxygen which becomes deoxygenated blood.
5. This deoxygenated blood is carried to the right atrium through the venous system.
6. Blood from right atria comes to right ventricle through tricuspid valves, and the blood from right
Ventricles travel through pulmonary arteries and enter the lungs. And in lungs oxygenation of
blood takes place.
7. Blood enters the left atria through pulmonary veins, and this pumps into left ventricles through
mitral valve.
8. Then blood from ventricles enters the systemic aorta, so that blood reaches to all body parts.
9. The contraction of left ventricle should be more pressure and it have to send blood to systemic
parts, and this is the reason where the left ventricle has thickest wall.
So the correct option is D.

Note:- During the process of filling and emptying of chambers of heart with blood results in blood pressure and pressure created by the arteries during the contraction of left ventricle, create the systolic pressure and refilling of ventricles after contraction creates diastolic pressure.