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प्रश्न
Differentiate between:
Arteries and Veins.
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उत्तर
| Arteries | Veins |
| These carry blood from the heart to different organs of the body. | These collect blood from different organs of the body. |
| These contain oxygenated blood (Pulmonary artery contains deoxygenated blood) | These contain deoxygenated blood. (Pulmonary vein contains oxygenated blood). |
| Blood flows rapidly with jerks under pressure. |
Blood flows slowly at a constant slow speed. |
| The walls are thick and elastic. | The walls are thin and non-elastic. |
| Valves are absent. | Valves are present. |
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संबंधित प्रश्न
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
Draw a neat and labelled diagram.
Internal structure of the heart.
pH of oxygenated blood is ______.
True or false:
Impure blood is received by the right auricle.
How many litres of blood does an adult human body have?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Leucocytes show amoeboid movement.
Match the following.
| Group A | Group B |
| (1) Lungs | (a) Circulation |
| (2) Stomach | (b) Respiration |
| (3) Heart | (c) Co-ordination |
| (4) Brain | (d) Digestion |
Why do we call saliva a digestive juice?
Blood is produced in the bone marrow.
Agranulocytes are about ______ % of total WBCs.
