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QRS complex represents

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Important Questions on Body Fluids and Circulation

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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 21
In an ECG, the depolarization of atria is indicated by
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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 22
Serotonin in the blood
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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 23
The artery can be distinguished from the vein in having
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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 24
The pulse rate is measured by feeling a/an
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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 25

Blood vessel carrying blood from lung to the heart is

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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 26
Which of the following has no muscular walls?
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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 27
The Iymphocytes protect us from
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Alpha Question Bank for Medical: Biology>Chapter 18 - Body Fluids and Circulation>Exercise-1>Q 28
The organ considered as “Graveyard of RBCs” is