Biology · General Awareness
Human Circulatory System
818 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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Arteries of body
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Capillaries surrounding the alveoli
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Left auricle of heart
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Capillaries surrounding the tissues
D
Correct answer
Explanation
The maximum amount of oxygen lost from blood is in capillaries surrounding the tissues.
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muscles
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bones
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capillaries
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ligaments
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cartilage
C
Correct answer
Explanation
Arteries and veins are joined by a network of capillaries.
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Artery
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RBC
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WBC
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Vein
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Platelet
B
Correct answer
Explanation
RBC contains haemoglobin.
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Their shape remains the same in all the classes of vertebrates.
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They are larger in size than the white blood corpuscles.
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Their life span is so short as 120 hrs.
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They adhere and pile up in resting and slow flowing blood.
D
Correct answer
Explanation
Their pile up structure is called rouleaux.
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It is released from a clot.
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It is a clear fluid.
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It lacks corpuscles and fibrogens.
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It has the tendency to coagulate.
D
Correct answer
Explanation
They have clotting proteins and, therefore, can undergo coagulation.
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Muscular tissue
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Connective tissue
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Epithelial tissue
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Nervous tissue
B
Correct answer
Explanation
Blood is a vascular connective tissue.
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The blood flows through blood vessels.
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The blood flows very slowly in the vessels.
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Blood has high pressure in the vessels.
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The blood comes in direct contact with the tissues.
B
Correct answer
Explanation
The blood flows very fast in the vessels.
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They are empty after the death of the animal.
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They do not collapse even after being cut.
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Their walls are thin and contain valves.
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Their blood flow is fast and intermittent.
C
Correct answer
Explanation
They have valves to prevent the back flow of blood.
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The blood flow is very fast.
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The blood pressure is very high.
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The blood flows through the sinuses.
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The blood never comes in direct contact with the tissues.
C
Correct answer
Explanation
Sinuses are open tissue spaces.
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They take blood from various body parts to the heart.
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They carry deoxygenated blood towards the heart.
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They carry blood with high pressure.
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They are located superficially.
C
Correct answer
Explanation
They circulate blood in the whole body. For this, the blood has high pressure.
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It can easily be observed.
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It is free at one end.
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It is thinner than blood capillaries.
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It has a uniform diameter.
B
Correct answer
Explanation
Its one end is joined to the lymphatic system while other is free.
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The brain
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The skin
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The muscles
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The lungs
B
Correct answer
Explanation
The skin receives less blood during heavy exercise.
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The tissue capillaries
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The alveolar capillaries
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The left atrium
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The arteries
A
Correct answer
Explanation
Tissues need oxygen for the respiration process.
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Arteries
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Heart
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Veins
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Lymphatics
A
Correct answer
Explanation
They do not have valves in them.
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The common carotid
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The branchial
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The aorta
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The external iliac
B
Correct answer
Explanation
It can be observed easily and it lies towards the inner side of the elbow.