Upstroke of action potential would lead to________________?

Related Mcqs:

1. The absolute refractory period of an action potential is due to _______________?

   A. Insufficient neurotransmitter
   B. Depletion of intracellular Na+
   C. Inactivation of Na+ k+ ATPase
   D. Voltage inactivation of the Na+ channel

2. 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

3. The viral action is differentiated from bacterial action by_________________?

   A. Interferon production
   B. Toxin production
   C. Lymphocytes production
   D. Neutrophils production

4. Rigor mortis results after death is due to________________?

   A. Failure of acetylcholine to diffuse
   B. Failure of ATP supply
   C. Failure of break down of calcium bridges
   D. None of the above

5. Plasma colloid osmotic pressure is due to________________?

   A. Albumin
   B. Globulin
   C. Fibrinogen
   D. Collagen

6. The end plate potential is characterized by_____________?

   A. Propagation
   B. All or none law
   C. Depolarization
   D. Hyper polarization

7. The skeletal muscle action potential______________?

   A. Is not essential for contraction to occur
   B. Has a prolonged plateau phase?
   C. Spreads in ward to all parts of the muscle via the t- tubule system
   D. Begins with an, in ward movement of K+ ins

8. Gases dissolved in molten metals are liberated when cooled giving rise to________________?

   A. Suckback porosity
   B. Gas inclusion porosity
   C. Localized shrinkage porosity
   D. Microporosity

9. megaloblastic anaemia occurs due to________________?

   A. Iron deficiency
   B. Folate deficiency
   C. Vitamin C deficiency
   D. Protein deficiency

10. Diffuse erythema (pinpoint petechiae) and white patches in smoker’s palate occur due to________________?

    A. Complete obstruction to minor salivary gland orifices
    B. Keratinization with partially occluded minor salivary glands
    C. Diffuse parakeratinization of the palate
    D. Excessive orthokeratinization of the palate