Question # 1

Which blood cells protect our body from pathogens.

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Platelets

RCBs

WBCs

None of these

Which artery supply blood to the heart

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Pulmonary artery

Hepatic artery

Coronary Artery

Aorta

The average life span of RBCs is.

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110 days

115 days

118 days

120 days

The pulse tells us the rate of..........

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Breathing

Heart beat

Both a and b

None of these

The concentration of water in plasma is.

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55%

45%

92%

95%

The thin transparent membrane around heart is called.

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Pericardium

Atria

Veins

Ventricle

Blood vessels that carry blood away from the heart are

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Capillaries

Veins

Arteries

Vanules

The humna circulatory system is consist of

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Heart

Blood

Blood vessels

All of these

A substance that speed up the chemical reactions is called.

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Solute

Solvent

Solution

Catalyst

Which blood vessesl have valves in it.

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Capillaries

Artery

Vein

Arteriole

Products of anaerobc respiration in yeasts are .......... along with energy.

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Carbon dioxide and water

Ethanol and carbon dioxide

Oxygen and water

Lactic acid and water

Exchange of gases takes place in.

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Lungs

Bronchioles

Aleoli

Blood

Without fibringonen, plasma is called.

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Blood

Serum

Haemoglobin

None of these

Trachea divides into two

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Bronchi

Veins

Villi

Ribs

Which of the following plays an important role in blood clotting.

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Red blood cells

White blood cell

Platelets

Bone cells

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