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प्रश्न
Explain the following:
Why is the closed circulatory system more efficient than the open system?
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उत्तर
The closed circulatory system is more efficient than the open system because in closed system the blood flows inside arteries or veins all the time which stops the mixing of blood with other bodily fluids and helps the transport of the blood around the body.
संबंधित प्रश्न
The blood from the heart is transported to all parts of the body by the ______.
The diagram given below represents a section of the human heart. Answer the questions that follow:
- Which parts of heart are in the diastolic phase? Give a reason to support your answer.
- Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
- What causes the heart sounds ‘LUBB’ and ‘DUP’?
- Name the blood vessels that supply oxygenated blood to the heart muscles.
- Draw neat labelled diagrams of a cross section of an artery and a vein.
The nearest organ to which the heart supplies oxygenated blood is:
Angina pectoris is due to
Give reason for the following:
The blood groups of both the donor and recipient must be known before transfusing blood.
Find the odd one out.
Distinguish between Intrinsic and extrinsic process of clotting
Which of the following health condition refers to the type of blood cancer in which uncontrolled increase in number of WBCs occurs?
______ prevent blood clotting.
In which of the following process blood neutrophils play an important role?
