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The figure given below shows three stages in the cardiac cycle.
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Which of the following sequences is correct regarding this?

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Important Questions on Body Fluids and Circulation

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 68
A red blood cell, entering the right side of the heart passes by or through the following structures.
(i) Atrioventricular valves
(ii) Semilunar valves
(iii) Right atrium
(iv) Right ventricle
(v) SAN
Which of the following options represents the correct sequence?
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 69
What happens when the pacemaker becomes non-functional?
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 70
In the given figure the durations of the events of the cardiac cycle are given. Identify these events and select the correct option.
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 71
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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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 72
In a cardiac output of 5250 ml per minute, with 75 heartbeats per minute, the stroke volume is
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 73
Rate of heartbeat is determined by
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 74

Which one of the following is a matching pair?

(i) Lub Sharp closure of AV valves at the beginning of ventricular systole
(ii) Dup Sudden opening of semilunar valves at the beginning of ventricular diastole
(iii) Pulsation of the radial artery Valves in the blood vessels
(iv) Initiation of the heart beat Purkinje fibres
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 18 - Body Fluids and Circulation>MCQS CORNER>Q 75
Heart sound which is longer is