The beating of the heart in a human being is heard on the left side because:
Correct answer: B. Both the ventricles are towards the left side
- A. Both the atria are towards the left side
- B. Both the ventricles are towards the left side
- C. Entire heart is on the left side
- D. The aorta is on the left side
Explanation
Option B: This option is the correct answer. It states that the beating of the heart is heard on the left side because both the ventricles (the lower chambers of the heart) are located towards the left side. The left ventricle, in particular, is responsible for pumping blood into the aorta, which is situated on the left side of the body. The sounds produced by the left ventricle's contraction and the closing of heart valves are more audible on the left side of the chest.
Last updated
About Circulation
The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.
Practise Circulation
695 free Circulation MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1% of the absorbed water is used by plants in its activities during:
75% osmotic pressure of blood is maintained by:
A bottle filled with previously moistened mustard seeds and water was screw-capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon involved is
A column of water within xylem vessels of tall trees does not break under its weight because of:
A destarched leaf on a potted plant was covered with Black (A) Transparent (B) strips of paper as shown in figure. After 6 hours of exposure to sunlight the leaf was removed from the plant and tested for starch. Which are the following will be the correct observation?