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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

Cardiac output is a measure of______________?

A Peripheral resistance X tissue fluid
B Peripheral resistance X cardiac rate
C Blood pressure X cardiac rate
D Heart rate X blood volume
Correct Answer: Heart rate X blood volume

The ventricular repolarization in ECG is best seen in_______________?

A “P” wave
B “Q” wave
C “R” wave
D “T” wave
Correct Answer: “T” wave

Parasympathetic stimulation of heart causes______________?

A SA node decreases firing
B Increased AV node excitability
C Decreased ventricular contraction
D Tachycardia
Correct Answer: SA node decreases firing

The dicrotic notch on the aortic pressure curve is caused by_________________?

A Closure of the pulmonary valve
B Rapid filling of the left ventricle
C Closure of the aortic valve
D Contraction of the atria
Correct Answer: Closure of the aortic valve

The function of Carotid body is_______________?

A Measures the change in Po2 in arterial blood
B Measures Po2 in venous blood
C Measures the changed in CO2 in arterial blood
D Measures the change in CO2 in venous blood
Correct Answer: Measures the change in Po2 in arterial blood

What is common between systemic and pulmonary circulation is_____________?

A Volume of the circulation per minute
B Peripheral vascular resistance
C Pulse Pressure
D Total Capacity
Correct Answer: Volume of the circulation per minute

The velocity of conduction in the Purkinjie fibers of the heart is__________________?

A 1 to 4 m/sec
B 5 to 8 m/sec
C 9 to 12 m/sec
D More than 12 m/sec
Correct Answer: 1 to 4 m/sec

Which of the following increases turbulence in blood flow ?

A Reynolds number < 2000
B Decrease in velocity of blood
C Decrease in density of blood
D Increase in diameter of blood vessel
Correct Answer: Increase in diameter of blood vessel

Glomerular capillary pressure differ from other capillaries of body in______________?

A Higher filtration pressure
B Lower filtration pressure
C Both of the above
D
Correct Answer: Higher filtration pressure

In determining blood pressure by auscultatory method_____________?

A The loudest sound is the diastolic pressure
B Systolic pressure estimation tends to be lower than those make by palpatory method
C The first sound heard is the systolic pressure
D The sounds that are heard are generated in heart
Correct Answer: The first sound heard is the systolic pressure
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