Body Fluids and Circulation Test

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Body Fluids and Circulation Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements doesn’t hold true for blood clotting cascade?

i. Ruptured platelets release thromboplastin.
ii. Prothrombinis converted into thrombin in the presence of vitamin K and Na+ions.
iii. Fibrinogen is converted into fibrin through enzymatic action of thrombin in the presence of Ca++ions
iv. Fibrin makes clot via process of polymerisation.

A
only statement i) and iv) are wrong

B
only statement ii) and iii) are wrong

C
only statement iv) is wrong

D
all statements are wrong

Solution

Ruptured platelets release thromboplastin. Fibrinogen present in blood plasma is converted into fibrin through enzymatic action of thrombin. Fibrin makes clot via process of polymerisation.
Question 2
1 / -0

Read the following :

i. The instrument used for recording heart’s electrical events is named electrocardiogram.
ii. In any ECG the part of base line between any two deflections is called interval.
iii. Abnormality in the working of heart changes wave pattern of ECG.

A
only i) and iii) are correct

B
only ii) and iii) are correct

C
only iii) is correct

D
all statements are correct

Solution

ECG is a graphical representation of the electrical activity of the heart during a cardiac cycle.
Question 3
1 / -0

The mass of tissue seen in the left corner of the right atrium close to the atri-ventricular septum is

A
SAN

B
Purkinje fibres

C
AVN

D
Bundle of His

Solution

Atrioventricular Node or AV node is compact half oval mass of myogenic fibres which lies in the posterior septal wall of right atrium near the opening of coronary sinus. It receives impulse from SA node and transmits it to ventricles.
Question 4
1 / -0

Blood pressure is expressed as the ratio of systolic over diastolic pressure. The difference between systolic and diastolic pressure is called pulse pressure. What will be its value for a normal healthy adult?

A
40 mm Hg

B
30 mm Hg

C
70 mm Hg

D
50 mm Hg

Solution

Pulse pressure is the difference between the systolic and diastolic pressure readings. It is measured in millimeters of mercury (mmHg). It represents the force that the heart generates each time it contracts. If resting blood pressure is (systolic-diastolic) 120-80 millimeters of mercury (mmHg), pulse pressure is 40
Question 5
1 / -0

In the human heart :

i. The valve between right atrium and right ventricle is tricuspid while valve between left atrium and left ventricle is mitral valve.
ii. Openings of the right and the left ventricles into the pulmonary artery and the aorta are guarded by semilunar valves.
iii. ‘Lub’ the first sound which is low pitched is caused by the closure of semilunar valves while ‘Dub’ the second sound which is high pitched is caused by the closure of bicuspid and tricuspid valves.

A
only i) and ii) are correct

B
only ii) and iii) are correct

C
only ii) is correct

D
only iii) is correct

Solution

The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves.
Question 6
1 / -0

Each cardiac cycle takes 0.8 seconds to occur. Calculate how many cardiac cycles occur in 4 minutes ?

A
300

B
250

C
75

D
400

Solution

4 min = 240 sec. Therefore, 240/0.8 = 300 cardiac cycles.
Question 7
1 / -0

The left atrium receives deoxygenated blood in :

A
lizards

B
Moneky

C
pigeons

D
humans

Solution

Deoxygenated blood from body parts reaches to left atrium of lizards but in human beings left atrium receives the oxygenated blood.
Question 8
1 / -0

Read the following statements :

i. when the heart is not pumping blood sufficient to meet the need of the body then this state is called as heart attack.
ii. when the heart stops beating due to irreversible death of cells then this state is called as heart failure.

A
Statement i) is wrong and ii) is correct

B
Statement i) is correct and ii) is wrong

C
both are correct

D
both are wrong

Solution

The state when the heart is not pumping blood sufficient to meet the need of the body then this state is called heart failure. When the heart muscles is suddenly damaged due to inadequate blood supply is called heart attack.

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Re-Attempt Weekly Quiz Competition

Body Fluids and Circulation Test - 4

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Body Fluids and Circulation Test - 4

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SHARING IS CARING

Question 1

only statement i) and iv) are wrong

only statement ii) and iii) are wrong

only statement iv) is wrong

all statements are wrong

Solution

Question 2

only i) and iii) are correct

only ii) and iii) are correct

only iii) is correct

all statements are correct

Solution

Question 3

SAN

Purkinje fibres

AVN

Bundle of His

Solution

Question 4

40 mm Hg

30 mm Hg

70 mm Hg

50 mm Hg

Solution

Question 5

only i) and ii) are correct

only ii) and iii) are correct

only ii) is correct

only iii) is correct

Solution

Question 6

300

250

75

400

Solution

Question 7

lizards

Moneky

pigeons

humans

Solution

Question 8

Statement i) is wrong and ii) is correct

Statement i) is correct and ii) is wrong

both are correct

both are wrong

Solution

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My Perfomance

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