Advertisements
Advertisements
प्रश्न
Give scientific reason.
Arteries are thicker than veins.
Advertisements
उत्तर
- Arteries carry oxygenated blood away from the heart to the body.
- The blood pumped out by the heart is under high pressure and to withstand this pressure arteries are thick-walled.
- Veins carry deoxygenated blood from the body back to the heart.
- They are thin-walled as the blood that flows through veins is under low pressure. Hence, arteries are thicker than veins.
- Veins, on the other hand, have thinner walls and a bigger lumen since they do not need to resist high pressure like arteries.
- Furthermore, because veins convey relatively low-pressure blood, they are frequently fitted with valves to promote unidirectional blood flow towards the heart.
APPEARS IN
संबंधित प्रश्न
Put a tick mark (✓) against the correct alternative in the following statement:
Function of WBCs is to
- Transport oxygen
- Help in clotting of blood
- Provide immunity
- Provide storage of food.
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.
Answer very briefly, Why should the blood going away from the stomach and intestines pass through the liver and not directly to heart?
Fill in the blank:
The blood vessels which carry blood from the heart to different parts of the body are called ________.
Describe the functions of White blood cells.
A muscular wall is absent in ______.
Complete the following sentence with appropriate words:
Arteries are _____ walled and the veins are _____ walled vessels.
Which type of blood flows through pulmonary veins?
Identify the CORRECT statement regarding pulse.
A blood vessel which pumps the blood from the heart to the entire body:
