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Biology Class 11 Chapter 12 - Circulation - 7
1.
Histamine is a?
a) both of these
b) none of these
c) vasodilator agent
d) vasoconstrictor agent
2.
The hormone responsible for fear, flight and fright conditions is?
a) epinephrine
b) testosterone
c) nor adrenaline
d) nor epinephrine
3.
The pulmonary circuit circulates blood through the?
a) heart
b) kidneys
c) lungs
d) stomach
4.
The largest artery in the systemic circuit is the?
a) aorta
b) inferior vana cava
c) none
d) superior vana cava
5.
The largest veins in the systemic circuit are?
a) aorta
b) pulmonary veins
c) none
d) vana cavas
6.
The inferior vana cava collects blood from?
a) lower body regions
b) chest
c) head
d) arms
7.
The vascular system that begins and ends with capillary beds and
Has no pumping mechanism is known as?
a) conducting system
b) reproductive system
c) respiratory system
d) portal system
8.
The portal system that begins with capillaries in the viscera and
Ends with the sinusoidal capillaries in the liver is called as?
a) pulmonary portal system
b) hepatic portal system
c) cardiac portal system
d) none of these
9.
The largest vein of the hepatic portal system is the?
a) pulmonary vein
b) splenic vein
c) pancreatic vein
d) hepatic portal vein
10.
The splenic vein drains into the?
a) liver
b) lung
c) spleen
d) kidney
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