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In the following diagram of T.S. of Artery, the region marked 'X' is

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Important Questions on Body Fluids and Circulation

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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 32
Purkinje's fibres are found in
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 33
Which of the following is an agranulocyte?
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 34
What is the nature of blood passing through the blood vessels A, B, C and D respectively?
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 35
The animal, which has oval RBCs is
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 36
Which of the following statement(s) regarding the cardiac system is/are correct?
(i) The human heart is an ectodermal derivative.
(ii) Mitral valve guards the opening between the right atrium and left ventricle.
(iii) SAN is located on the left upper corner of the right atrium.
(iv) Stroke volume×Heart rate = Cardiac output.
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 37
Which of the following vertebrate organ/s receives only oxygenated blood?

a. Heart
b. Lungs
c. Liver
d. Spleen
e. Gills
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 38
Statement 1- Lymph capillaries are free and blind at one end.
Statement 2- Lymph does not flow in a circular manner.
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Biology Crash Course NEET>Chapter 18 - Body Fluids and Circulation>Level 1>Q 39
In the given figure of the heart which of the labelled parts (1, 2, 3, 4, 5) carries oxygenated blood?
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