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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

Pain sensation from the lateral extremities is transmitted by________________?
A Spino thalmamic tract
B Dorsal column
C Corticospinal tract
D Spinocerebellar tract
Correct Answer: Spino thalmamic tract
Pain is conducted by________________?
A A-alpha fibers
B A-beta fibers
C A-gamma fibers
D A-delta fibers
Correct Answer: A-delta fibers
Stimulation of baroreceptors results in_______________?
A Increase in heart rate
B Decreased vagal discharge
C Increased sympathetic discharge
D Decrease in blood pressure
Correct Answer: Decrease in blood pressure
2nd heart sound is characterized by all except______________?
A Due to closure of semilunar valves
B Is occasionally split
C Has longer duration than 1st heart sound
D Marks the onset of diastole
Correct Answer: Has longer duration than 1st heart sound
Heart muscle, true are all except_______________?
A Act as syncytium
B Has multiple nuclei
C Has gap junctions
D Has branching
Correct Answer: Has multiple nuclei
Isovolumetric relaxation ends immediately after________________?
A AV Valve closes
B When ventricular pressure falls below aortic pressure
C When ventricular pressure falls below atrial pressure
D None of the above
Correct Answer: When ventricular pressure falls below atrial pressure
Ventricular muscle receives impulses directly from the_______________?
A Purkinje system
B Bundle of HIS
C Right and left bundle branches
D AV node
Correct Answer: Purkinje system
Distribution of blood flow is mainly regulated by the________________?
A Arteries
B Arterioles
C Capillaries
D Venules
Correct Answer: Arterioles
Effect on force of contraction of heart is_____________?
A Chronotropic effect
B Dromotropic effect
C Bathmotropic
D Ionotropic effect
Correct Answer: Ionotropic effect
Cardiac output is maximum to _________________?
A Liver
B Brain
C Kidney
D Heart
Correct Answer: Liver
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