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Biology Class 11 Chapter 12 - Circulation - 9
1.
When the ventricles of the heart contract, the arterial blood Pressure is the?
a) highest
b) medium
c) slowest
2.
When the ventricles of the heart relax, the arterial blood pressure is the?
a) slowest
b) medium
c) highest
3.
The lowest arterial blood pressure is known as?
a) diastolic pressure
b) systolic pressure
c) osmotic pressure
d) heart pressure
4.
The highest arterial blood pressure is known as?
a) systolic pressure
b) diastolic pressure
c) osmotic pressure
d) heart pressure
5.
The sensory receptors which are sensitive to the stretch are called as?
a) both of these
b) pressoreceptors
c) none of these
d) baroreceptors
6.
The approximate cross sectional area of aorta is?
a) 20 cm2
b) 2.5 cm2
c) 80 cm2
d) 40 cm2
7.
The velocity of blood in the aorta is approximately?
a) 20 cm/sec
b) 10 cm/sec
c) 2 cm/sec
d) 40 cm/sec
8.
The cross sectional area of veins is approximately?
a) 2.5 cm2
b) 80 cm2
c) 8 cm2
d) 40 cm2
9.
Cardiovascular disorders are the diseases of?
a) heart and blood vessles
b) lungs
c) kidneys
d) liver
10.
The velocity of blood in the capillaries is approximately?
a) 20 cm/sec
b) 40 cm/sec
c) 30 cm/sec
d) 0.1 cm/sec
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