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.Management Sciences
Category: Physiology Mcqs
The end plate potential is characterized by_____________?
A. Propagation
B. All or none law
C. Depolarization
D. Hyper polarization
In nerve , the magnitude of the action potential overshoot is normally a function of the______________?
A. Magnitude of the stimulus
B. Intracellular potassium concentration
C. extracellular sodium concentration
D. resting membrane potential
Which hormone , together with the catecholamines enhances the tone of vascular smooth muscle and assists in elevating blood pressure ?
A. Parathyroid hormone
B. Glucagon
C. Thyroxine
D. Cortisol
Voluntary movement of eye ball is controlled by______________?
A. Superior colliculus
B. Frontal eye field
C. Cerebellum
D. Visual cortex area
The ventricular repolarization in ECG is best seen in_______________?
A. “P” wave
B. “Q” wave
C. “R” wave
D. “T” wave
Which of the following hormones exerts the least effect on calcium metabolism of bone tissue ?
A. Anderogen
B. Estrogen
C. Nor epinephrine
D. Thyroid hormone
Megaloblasts are precursors of_____________?
A. Megakaryocytes
B. Norm oblasts
C. Myelocytes
D. Macrocytes
Peristalsis in the gut is due to ______________?
A. Preperistalitic intestinal secretion
B. Mecharical distension
C. Simultaneous action of circular and longitudinal muscles
D. Extrinsic nervous influence
Pain is conducted by________________?
A. A-alpha fibers
B. A-beta fibers
C. A-gamma fibers
D. A-delta fibers
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