PATHOLOGY MCQ
BLOOD VESSELS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The protect the blood inside.
|
|
|
To prevent coronary heart disease,
|
|
|
So substance like oxygen can’t move through the walls.
|
|
|
To withstand the large amount of pressure in the blood they carry.
|
Detailed explanation-1: -Since the blood pumped from the heart into the arteries flows at higher pressure than the blood in veins, hence arteries need to have thicker walls or else the high blood pressure might cause them to burst.
Detailed explanation-2: -Arteries have thick walls so they can handle the high pressure and velocity that expels your blood out of your heart. Veins carry blood back to your heart from the rest of your body. The pressure of the blood returning to the heart is very low, so the walls of veins are much thinner than arteries.
Detailed explanation-3: -An artery is a blood vessel that conducts blood away from the heart. All arteries have relatively thick walls that can withstand the high pressure of blood ejected from the heart.