Body Fluids and Circulation MCQs | Body Fluids and Circulation Objective Type Questions with Answers

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Questions
1 SA node is located in _____
A upper lateral wall of right atrium
B lower lateral wall of left atrium
C lower lateral wall of right atrium
D upper lateral wall of left atrium

Answer:upper lateral wall of right atrium
2 “Bundle of HIS” is made up of _________
A nervous tissue supplied to ventricles
B nervous tissue supplied to heart
C muscular tissue supplied to heart
D muscular tissue supplied to ventricles

Answer:muscular tissue supplied to ventricles
3 Blood enters into the heart because of muscles of _______
A atria relax
B ventricles contract
C ventricles relax
D atria contract

Answer: atria relax
4 The opening of right atrium into right ventricle is guarded by _______
A mitral valve
B tricuspid valve
C bicuspid valve
D aortic semilunar valve

Answer:tricuspid valve
5 Mitral valve is present between __________
A right atrium and left ventricle
B right and left ventricle
C left ventricle and aorta
D left atrium and left ventricle

Answer: left atrium and left ventricle
6 Cardiac output is determined by _______
A heart rate
B stroke volume
C blood flow
D heart rate and stroke volume

Answer:heart rate and stroke volume
7 In human being the duration of cardiac cycle is ___________
A 0.008 sec
B 0.5 sec
C 0.8 sec
D 8 sec

Answer:0.8 sec
8 The volume of blood each ventricle pumps out during a cardiac cycle is about ___________
A 70 ml
B 5000 ml
C 7 L
D 1200 ml

Answer:70 ml
9 What is the definition of the cardiac cycle?
A The contraction of the atria
B Circulation of the blood in the heart
C The contraction and relaxation of the ventricles
D It is a sequence of event that occurs during one complete heartbeat

Answer: It is a sequence of event that occurs during one complete heartbeat
10 Name the three phases of cardiac cycle in the order ____________
A early diastole, mid-to-late diastole, ventricular systole
B ventricular systole, mid-to-late diastole, Early diastole
C mid-to-late diastole, Ventricular systole, Early diastole
D early diastole, Ventricular systole, mid-to-late diastole

Answer: mid-to-late diastole, Ventricular systole, Early diastole
11 An electrocardiogram is a graphic illustration of ____________
A cardiac conduction system
B cardiac cycle
C cardiac output
D systemic and pulmonary circuits

Answer: cardiac conduction system
12 The P wave of the ECG represents _______________
A ventricular depolarization
B atrial depolarization
C ventricular repolarization
D atrial systole

Answer: atrial depolarization
13 Which of the following is not true for ventricular systole?
A The ventricles relax
B The ventricles contract
C The semi lunar valves close
D The atrioventricular valves open

Answer: The ventricles relax
14 The two distinct heart sounds during the cardiac cycle are lub and dup.
A True
B False

Answer: True
15 Heart beat initiates from ________
A Purkinji fibers
B SA node
C Bundle of HIS
D Auriculo ventricular node

Answer:SA node
16 An artificial pace maker is implanted and connected to the heart in patients ___________
A suffering from arteriosclerosis
B having high blood pressure
C with irregularity in heart rhythm
D having 90% blockage

Answer: with irregularity in heart rhythm
17 A heat murmurs indicates a defective ___________
A Heart valves
B Bundle of HIS
C SA node
D AV node

Answer: Heart valves
18 Choose the correct pathway of the transmission of impulses in heart beat.
A AV node- SA node- Bundle of HIS- Purkinji fibres
B SA node- AV node- Bundle of HIS- Purkinji fibres
C SA node- Bundle of HIS- AV node- Purkinji fibres
D SA node Purkinji fibres- Bundle of HIS- AV node

Answer: SA node- AV node- Bundle of HIS- Purkinji fibres
19 In ECG the depolarization of atria is indicated by __________
A P wave
B Q wave
C R wave
D S wave

Answer: P wave
20 Which of the following pair is correctly matched?
A Dup- Sudden opening of semilunar valves at the beginning of ventricle diastole
B Lubb- Sharp closing of AV valves at the beginning of ventricular systole
C Pulsation of radial artery valves in blood vessels
D Initiation of heart beat- Purkinji fibers

Answer: Lubb- Sharp closing of AV valves at the beginning of ventricular systole

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