Body Fluids And Circulation

Biology
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The artery which supplies blood to the diaphragm is known as

A
Cardiac artery
B
Phrenic artery
C
Lingual artery
D
Lumbar artery
Medium
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Which of the following statements is correct with reference to the circulation of blood in a mammal?

A
The left atrium receives oxygenated blood from the lungs.
B
The pulmonary artery returns oxygenated blood from the lungs to the left atrium.
C
The pulmonary vein carries deoxygenated blood from right ventricle to the lungs.
D
The deoxygenated blood is returned to the left atrium.
Medium
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Blood enters the heart because muscles of the ___________.

A
Atrium contracts
B
Atrium relaxes
C
Ventricle relaxes
D
Ventricle contracts
Medium
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In order for the blood to flow from right ventricle to left ventricle in mammalian heart, it must flow through

A
Right ventricle, pulmonary arteries, lungs, pulmonary veins and left atrium
B
Right ventricle, pulmonary arteries, lungs, pulmonary arteries and left atrium
C
Right ventricle, right atrium, lungs, pulmonary veins and left atrium
D
Right ventricle, systemic aorta, lungs, pulmonary veins and left atrium
Medium
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Tissue plasminogen activator

A
Helps in wound healing
B
Dissolves clot in blood vessels of heart
C
Allergy response
D
None of the above
Medium
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Mammals are said to have a "double circulatory system". This means

A
That the blood vessels are paired.
B
That there are two types of blood vessels attached to every organ; an artery and a vein.
C
That there are two system; one from the heart to the lungs and back to the heart and other to and from rest of the body.
D
That the blood circulates twice as quickly.
Medium
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Which among the following is not found in mammals?

A
Hepatic portal system
B
Hypophyseal portal system
C
Renal portal system
D
Hepatic and hypophyseal portal system
Medium
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The blood vascular system of mammals is known as the double vascular system because:

A
A group of arteries carries oxygenated and other groups of veins conduct deoxygenated blood.
B
Oxygenated blood runs from the heart to different organs by one set of arteries while deoxygenated blood runs from the heart to lung by pulmonary artery.
C
The two different systems never meet.
D
All of the above
Medium
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In man, blood passes from the post caval into the diastolic right atrium of the heart because of

A
Pushing of venous valves
B
Suction pull
C
Beating of SA node
D
Pressure difference between post caval and atrium
Medium
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