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Biology Class 11 Chapter 12 - Circulation - 6
1.
The arteries that carry deoxygenated blood away from the heart are known as?
a) blood arteries
b) pulmonary arteries
c) oxygenated arteries
d) deoxygenated arteries
2.
The outermost layer of the artery wall is known as?
a) tunica adventitia
b) tunica intima
c) tunica interna
d) tunica media
3.
Tunica intima is the ___ layer of the artery wall?
a) inner
b) outer
c) middle
4.
The middle layer of the artery wall is known as?
a) tunica adventitia
b) tunica externa
c) tunica intima
d) tunica media
5.
The internal lining of the blood vessels is known as?
a) endocardium
b) endothelium
c) exothelium
d) pericardium
6.
The blood vessels that bring blood back to the heart are called as?
a) ventricles
b) arteries
c) veins
d) auricles
7.
As a result of vasoconstriction, the diameter of the blood vessels?
a) does not affect
b) decreases
c) increases
8.
Due to vasodilation, the diameter of the blood vessels?
a) decreases
b) increases
c) does not affect
9.
The most powerfull vasoconstriction hormone is?
a) histamine
b) prolactin
c) epinephrine
d) norepinephrine
10.
The color of the veins is?
a) red
b) pink
c) blue
d) yellow
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