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प्रश्न
What is the advantage of having a four-chambered heart?
उत्तर
Four chambered heart has the following advantages
- Clear cut division of labours among different chambers
- Segregation of oxygenated and deoxygenated blood in the heart.
- Efficiency of the heart will increase.
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संबंधित प्रश्न
Name the following:
The phase of the cardiac cycle in which auricle contracts.
The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
Which part of the heart is contracting in this phase? Give a reason to support your answer.
Name the Following
Layer, which surrounds the heart.
Give scientific reason.
Left ventricle is thick than all other chambers of heart.
How many times per healthy man beats?
Blood capillaries show the presence of ______
Identify the CORRECT route through which impulse travels in the heart.
Draw a neat diagram of the conducting system of human heart and label AV node, Bundle of His and Purkinje fibres.
The ______ have thin and less muscular ______ and have ______ to prevent back flow of ______.
Note the relationship between the first two words and suggest a suitable word/words for the fourth place:
Lub : Atrioventricular valves :: Dup : ______
