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प्रश्न
The figures given below show diagrammatic cross sections of three kinds of blood vessels.
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- Identify the blood vessels A, B and C.
- Name the parts labelled 1-4.
- Mention two structural differences between A and B.
- Name the kinds of blood that flow through A and through B respectively.
- In which one of the vessels referred to in (a) above does the exchange of gases actually take place?
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उत्तर
- A - Artery, B - Vein, C - Capillary
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- Tunica Externa
- Lumen
- Tunica media
- Endothelium
- An artery has thick muscular walls and a narrow lumen. It does not have any valve.
A vein, on the other hand, has thin muscular walls and a wider lumen. It has valves to prevent backflow of blood. - A (Artery) - oxygenated blood, B (Vein) - deoxygenated blood.
- At the capillary level, the actual exchange of gases takes place.
संबंधित प्रश्न
Write the function of valves present in between atria and ventricles.
Put a tick mark (✓) against the correct alternative in the following statement:
Blood Capillary is a
- Broad tube
- Artery with thick wall
- Vein with large lumen
- Narrow tube made up of endothelium only.
Fill in the blank.
___________ carry pure blood.
Which of the following statement is true (T) and which ones are false (F)? Mark T or F:
Impure blood is received by the right auricle.
Name the Following
The blood vessel leaving the left ventricle of the mammalian heart
Complete the following sentence with appropriate words:
The three distinct types of blood vessels are _____, ______, and _________.
Complete the following sentence with appropriate word:
The blood vessel that begins and ends in capillaries is the _________.
At the venous end of the capillary bed, the osmotic pressure is ______.
Identify the CORRECT match.
Name these:
Three kinds of blood vessels.
