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प्रश्न
State the differences between artery, vein and capillary.
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उत्तर
Differences between artery, vein, and capillary:
| Arteries | Veins | Capillaries |
| Arteries are tough, thick, and elastic tubes. | Veins are thin-walled and non-elastic tubes. | Capillaries are very thin-walled tubes. |
| They have a narrow lumen. | They have a wide lumen. | They have a very narrow lumen, just wide enough for a red blood cell to pass through it. |
| They carry blood away from the heart to the various organs of the body, at high pressure. | They transport blood towards the heart from various organs, at low pressure. | They carry blood from the arteries to the veins. |
| They do not have valves. | They have valves to prevent the backward flow of the blood. | They do not have valves. |
| They transport only oxygenated blood (except for the pulmonary artery). | They transport only deoxygenated blood (except for the pulmonary vein). | They exchange oxygen, carbon dioxide, water, and salts between the blood and the surrounding tissues |
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संबंधित प्रश्न
Name the largest artery
Why does the heart need valves?
What is the name of blood vessels which connect arteries to veins?
A blood vessel which carries blood back to the heart is:
Differentiate between the following pair of terms:
Platelets and WBC.
Fill in the blank with suitable word given below:
The colour of a red blood cell is due to _______________.
Multiple choice question. Tick (✓) the correct choice:
The four blood groups in humans are
- A, B, C and D
- A, B, AB and C
- A, B, AB and O
- A, B, AB and OO
Fill in the blank.
___________ carry pure blood.
Fill in the blank.
The red-coloured pigment present in RBCs is called __________.
Define the term Arteries.
Study the following diagram carefully:
(a) With which figure in the chapter can you roughly compare this diagram?
(b) Write any two things shown in it as extra from those in the figure named above.
Write three types of blood vessels. Give one important feature of each.
The diagrams given below show the cross-section of two kinds of blood vessels:
(i) Identify the blood vessels A and B. In each case give a reason to support your answer.
(ii) Name the parts numbered 1 and 2.
(iii) When are the sounds “LUBB” and “DUB” produced during a heartbeat?
(iv) Name the blood vessel that
(a) begins and ends in capillaries.
(b) supplies blood to the walls of the heart.
Name the Following
The blood vessel supplying blood to the kidney.
Complete the following sentence with appropriate word:
The blood vessel which transports blood from heart to an organ is called _________.
At the venous end of the capillary bed, the osmotic pressure is ______.
Identify the CORRECT statement about veins.
Identify the CORRECT statement regarding pulse.
The extracellular fluid released from the capillaries is ____________.
Assertion: Veins have thin walls to collect blood from different organs.
Reason: Blood in veins are not under pressure.
