Biology · General Awareness
Human Circulatory System
846 Questions
The human circulatory system explores the network of blood vessels, heart valves, and structural pathways. Test items often target blood flow sequences and specific vascular functions. Mastering these details is vital for biology preparation.
Heart valves and chambersBlood vessels and venulesArteries of the bodyBlood supply to organsCentral nervous system supply
Human Circulatory System Questions
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aorta
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pulmonary artery
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pulmonary vein
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vena cava
A
Correct answer
Explanation
Oxygenated blood passes from the left atrium into the left ventricle, from where it is pumped out of the heart into the aorta (body's largest artery).
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oxygenated, aorta
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deoxygenated, vena cava
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oxygenated, vena cava
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deoxygenated, aorta
B
Correct answer
Explanation
After supplying oxygenated blood to various parts of the body, the blood becomes deoxygenated. This deoxygenated blood is supplied into a large vein known as vena cava, which empties into right atrium or auricle of the heart.
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Superior vena cava
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Inferior vena cava
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Pulmonary vein
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Renal vein
C
Correct answer
Explanation
It brings the oxygenated blood from the lungs back to the left auricle of heart.
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Angiology
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Chondriology
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Cardiology
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Haematology
A
Correct answer
Explanation
It is the study of blood vessels.
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Aorta
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Pulmonary artery
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Hepatic artery
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Renal artery
B
Correct answer
Explanation
It carries deoxygenated blood to lungs for oxygenation.
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carotid arteries
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hepatic arteries
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coronary arteries
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pulmonary arteries
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transfusion
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disorder
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palpitation
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clotting
D
Correct answer
Explanation
Clotting (or coagulation) is the physiological process by which blood changes from a liquid to a gel, forming a clot to stop bleeding at the site of an injury.
C
Correct answer
Explanation
The heart is the central pump of the circulatory system.
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Afferent arteriole
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Efferent arteriole
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Renal vein
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Renal portal vein
C
Correct answer
Explanation
Renal vein takes away blood from the kidney.They connect the kidney to the inferior vena cava. They carry the blood purified by the kidney.
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It helps in blood clotting.
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It protects the body against infection.
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It carries away waste products to kidneys, lungs intestines.
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It transports food and oxygen to each body cell.
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It regulates blood pressure.
E
Correct answer
Explanation
This is the correct option as this is not a function of the human circulatory system. It regulates the blood temperature.
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Only a
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Only b and c
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Only d
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Only a and d
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Only a and c
C
Correct answer
Explanation
This is the correct option. The circulatory system in the human body does not consists of the kidneys. They are a part of the excretory system.
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left auricle
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right atrium
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left ventricle
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right ventricle
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None of these
A
Correct answer
Explanation
This is the correct option. In a human body, the pure oxygenated blood is carried by the pulmonary vein to the left auricle.
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the pressure of the blood capillaries is higher than the outside pressure
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the pressure at high altitudes is higher than that of the plains
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the blood pressure increases increases at high altitudes
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the blood pressure fluctuates and cause the blood vessels to break
A
Correct answer
Explanation
At high altitudes, atmospheric pressure is lower. The internal blood pressure in the capillaries remains higher than the external pressure, which can cause delicate vessels in the nose to rupture.
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Fibrin
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Haemoglobin
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Plasma
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Heparin
D
Correct answer
Explanation
Blood does not clot inside the body because if a person's blood contains antigen a, then serum must contain anybody b, serum should not contain antibody a otherwise the person's blood will agglutinate.
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water
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gland
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blood
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platelets
C
Correct answer
Explanation
Fluid connective tissue in the human body consists of blood and lymph. These tissues transport nutrients, gases, and waste products throughout the body.