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Define cardiac cycle.

Important Questions on Human Physiology-1

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Biology>Physiology>Human Physiology-1>Blood System
The pH of blood is
HARD
Biology>Physiology>Human Physiology-1>Blood System
What happens to blood when it is pumped into the thin-walled blood vessels of the lungs? 
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Biology>Physiology>Human Physiology-1>Blood System
_____is the period of contraction of the ventricles of the heart. 
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Biology>Physiology>Human Physiology-1>Blood System

Examine the diagrammatic representation of standard ECG. Select an option with correct matching.
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Biology>Physiology>Human Physiology-1>Blood System
Which among of these blood vessels carries only deoxygenated blood?
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Biology>Physiology>Human Physiology-1>Blood System
Arteries and veins are joined by a network of _____.
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Biology>Physiology>Human Physiology-1>Blood System
Which of the following is an incorrect statement w.r.t. the events of cardiac cycle?
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Biology>Physiology>Human Physiology-1>Blood System
When the left ventricle contracts its blood is pumped to _____.
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Biology>Physiology>Human Physiology-1>Blood System
Digested food, gases, waste and other substances pass into and out of the blood through the thin walls of
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Biology>Physiology>Human Physiology-1>Blood System
The oxygenated blood from the lungs is returned to the left atrium through Pulmonary _____.
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Biology>Physiology>Human Physiology-1>Blood System
During ventricular systole
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Biology>Physiology>Human Physiology-1>Blood System
Which of the blood vessels has a thick middle layer of smooth muscles and elastic fibres?
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Biology>Physiology>Human Physiology-1>Blood System

The normal duration of the ventricular _____ is 0.3 seconds.

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Biology>Physiology>Human Physiology-1>Blood System
Given below are the figures of blood vessels. Identify them and select the correct option.
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Biology>Physiology>Human Physiology-1>Blood System
The substances to and from the tissues diffuse through the walls of _____.
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Biology>Physiology>Human Physiology-1>Blood System
Which one of the following does not have valves?
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Biology>Physiology>Human Physiology-1>Blood System

Fill in the blanks with the correct words given in the box.

Arteries and veins are joined by a network of _____.

 phloem, blood, four, capillaries, white blood
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Biology>Physiology>Human Physiology-1>Blood System
A fine network of blood vessels joining arteries and veins is called _____. (Capillaries/ Vena cava)
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Biology>Physiology>Human Physiology-1>Blood System

At the end of atrial contraction, immediately, the _____contraction starts.

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Biology>Physiology>Human Physiology-1>Blood System
The blood vessels that carry blood away from the heart is: