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प्रश्न
How do you account for the following difference?
The left ventricle has thicker walls than the right ventricle.
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उत्तर
The left ventricle pumps blood to the farthest points in the body such as the feet, the toes and
the brain against the gravity while the right ventricle pumps the blood only up to the lungs.
Therefore, the left ventricle has thicker walls than the right ventricle.
संबंधित प्रश्न
The diagram below represents the human heart in one phase of its function. Study the diagram carefully and answer the questions that follow:
(i) Name the phase.
(ii) Which part of the heart is contracting in this phase? Give a reason to support your answer.
(iii) Name the parts labelled 1 to 4.
(iv) What type of blood flows through ‘2’?
(v) State the function of the part numbered ‘5’.
(vi) Name the membrane that covers the heart.
Give appropriate biological or technical terms for the following :
The complex consisting of a DNA strand and a core of histones
Is it true that your heart beats more than one lac times per day?
Given below is a certain structure, write its chief functional activity.
Lymphocytes - ______.
Why do people have a common belief that the heart is located on the left side of the chest?
The table below is designed to indicate the transport of certain substance in our body. Fill in the
blanks with suitable answers.
| Substance | From | To |
| Lungs | Whole body | |
| Carbon dioxide | ||
| Urea | ||
| Digested carbohydrates |
Intestines | |
| Target organs |
Give reason for the following:
The walls of the left ventricle are thicker than the walls of all other chambers.
What is meant by the term 'double circulation' of blood in mammals? What is diastole?
Differentiate between the following pair of terms: Vena Cava and Aorta
Use your brain power!
How is the air that we inhale purified in our body?
