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प्रश्न
How many litres of blood does an adult human body have?
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उत्तर
5.5 litres of blood
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संबंधित प्रश्न
The diagram given below represents a section of the human heart. Answer the questions that follow :
(i) Which parts of heart are in the diastolic phase? Give a reason to support your answer.
(ii) Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
(iii) What causes the heart sounds ‘LUBB’ and ‘DUP’?
(iv) Name the blood vessels that supply oxygenated blood to the heart muscles.
(v) Draw neat labelled diagrams of a cross section of an artery and a vein.
Give reason for the following:
Blood flowing away from the stomach and intestines is put into circulation via the liver and
not directly.
In which organ of our body does blood get oxygenated?
Veins have valves at intervals in their inner lining whereas the arteries do not have valves. Explain.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The walls of auricles are thicker than those of ventricles.
Long answer question:
Describe human blood and give its functions.
Analogy
Lungs: Respiratory system:: _______: Circulatory system.
A resting person usually has a pulse rate between 72 to 80 beats per minute.
The heart is covered by ______.
