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When ventricular systole occurs

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Important Questions on Body Fluids and Circulation

MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:
HARD
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Tricuspid valve

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Thebesian valve

EASY
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Sketch the internal structure of human heart. Label all the valves present in it. Mention the function of any one valve in the heart.
MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

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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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Bicuspid valve

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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Give the location of the following valve within the human heart.

Eustachian valve.

MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Describe the structure of the heart of man with the help of a neat labelled diagram.
EASY
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Purkinje fibres are located in the following structure/s
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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Assertion (A): Pulmonary aorta in human embryo communicates with systemic aorta by a thin vessel called ductus arteriosus.
Reason (R): In the heart of the human embryo, oxygenated and deoxygenated blood is completely separated.
EASY
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Sketch and label the conducting system of human heart.
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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Which of the following is associated with decrease in cardiac output?
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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
What does the QRS wave indicate in ECG? 
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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Match the different types of heart given in column A with organisms given in column B. Choose the correct combination.
 
Column A Column B
P. Neurogenic heart. i. Human
Q. Bronchial heart. ii. King crab
R. Pulmonary heart. iii. Shark
EASY
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Write notes on the working of the heart of man.
MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?  
MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
Which one of the following statements is correct?
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Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Match the following related to the cardiac cycle.

Column I Column II
i Cardiac Cycle a 0.2 sec
ii Atrial Systole b 0.4 sec
iii Ventricular Systole c 0.1 sec
iv Cardiac Diastole d 0.8 sec
    e 0.3 sec
MEDIUM
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways

Assertion (A): Dub' is one of the sounds of the heart caused during a cardiac cycle.

Reason (R): The sound is due to closure of semilunar valves present at the bases of aortic arches.

EASY
Biology>Human Physiology>Body Fluids and Circulation>Circulatory Pathways
How do parasympathetic neural signals affect the working of the heart?