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Science TNSB Mentoring
Class 10
Transportation in plants & circulation in animals
Human Circulatory System
6.
Blood vessels, blood circulation in heart
Question:
4
m.
State whether the statements are true or false and select the following explanation for the same
:
1
.
Veins have thick and non-elastic walls.
The statement is
True
False
Veins have thick walls as the blood emerges from the heart under high pressure
Veins do not have thick walls as the blood is not under pressure
2
.
Coronary arteries branch off from aortic arch.
The statement is
False
True
Coronary arteries supply deoxygenated blood to the cardiac muscles
Coronary arteries supply oxygenated blood to the cardiac muscles
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