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Define arteriole.

Important Questions on Body Fluids and Circulation

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Statement (S): The sinoatrial node is called 'Pace-maker'.

Reason (R): The sinoatrial node contains specialised cardiomyocytes and generates action potentials without any external stimuli.

The correct answer is

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Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence beginning with the first word that is underlined:

Artery, Capillaries, Venule, Vein, Arteriole.

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Blood pressure in the pulmonary artery is:
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Blood pressure in the mammalian aorta is maximum during
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In the given diagram, the role of ‘X’ is to

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Which blood vessels carry blood from different parts of your body to the heart?
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Which of the following statements is true?
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The opening between the right atrium and the right ventricle is guarded by the valve named
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Ventricles have _____ walls when compared with those of auricles.
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The wall of the heart consists of three layers, such as epicardium, myocardium and _____ .
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In the following diagram of T.S. of Artery, the region marked 'X' is

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Blood capillary consists of -
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Muscular ridges at inner surface of ventricles are called
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Find the odd one out.
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Fill in the blank by choosing the correct option from the bracket: (oxygen, carbon dioxide)

substance From To
 _____ Lungs Whole-body

 

 

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_____ is a condition where the heart beat is slower than normal.
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Covering of the heart is called
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The main difference in the structure of arteries and veins is in:
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Rewrite the terms in the correct order in a logical sequence:
Foetus: Amnion:: Heart: _____.
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Walls of capillaries consist of a single layer of squamous _____ cells.