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प्रश्न
Explain the difference.
Arteries and veins.
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उत्तर
|
Arteries |
Veins |
| 1. Carries blood towards organs and away from the heart. | Carries blood towards the heart and away from organs. |
| 2. Carries fully oxygenated blood | Carries deoxygenated and CO2 enriched blood. |
| 3. Blood flows with high pressure and jerks. | Blood flows with low pressure and smoothly. |
| 4. Have no valves | Have valves to prevent backflow of blood. |
| 5. Walls are elastic. | Walls are non-elastic. |
| 6. Are Deeply placed. | Are superficial. |
| 7. Branched and decreases in size. | Unites and increases in size |
| 8. Can constrict and dilate | Cannot constrict. |
| 9. Have thick and muscular walls | Have thin and less muscular walls. |
| 10. Smallest artery is called arteriole | The smallest vein is called Venules. |
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 technical terms for The protective covering of the heart
Give appropriate biological or technical terms for the following
The relaxation phase of the heart.
Agranulocytes are :
Heart sounds are produced due to ______.
-
closure of tricuspid and bicuspid valves
-
rushing of blood through valves producing turbulence
-
closure of atrioventricular and semilunar valves
-
entry of blood into auricles
Name the following:
The artery which carries deoxygenated blood.
Give reason for the following:
Atrial wall is less muscular than the ventricular wall.
Name the main artery which carries blood to different parts of the body.
Choose the correct alternative.
What is the minimum number of the plasma membrane that oxygen has to diffuse across to pass from air in the alveolus to haemoglobin inside a RBC?
The lymphatic system consists of which of the following?
