The passage of nerve impulse is associated with increase in permeability of which of the following ion:

Related Mcqs:

1. The neuron conducts the impulse in the form of nerve impulse during:

   A. Threshold potential
   B. Active membrane potential
   C. Resting membrane potential
   D. All of the above

2. A membrane potential of_________volts exits when a neuron is not conducting a nerve impulse:

   A. 0.05
   B. 0.07
   C. 0.05 to 0.07
   D. 1

3. Under normal conditions a nerve impulse is initiated by an appropriate stimulus called:

   A. Threshold stimulus
   B. Active membrane potential
   C. Resting membrane potential
   D. All of the above

4. The conduction of a nerve impulse down the axon is called a (n):

   A. ion potential
   B. action potential
   C. resting discharge
   D. synapse

5. The nature of a nerve impulse is primarily a/an _____________ event; communication between neurons is primarily a/an_____________

   A. chemical; electrical
   B. acetylcholine, catecholamine
   C. dendrite; axon
   D. electrical; chemical

6. The concentration one of the following ion is tenfold higher on the outside of the membrane than inside:

   A. Sodium
   B. Potassium
   C. Organic ions
   D. All of these

7. The pathway of passage of impulses during a reflex action is:

   A. Reflex arc
   B. Reflex circuit
   C. Nerve impulse
   D. None of these

8. One of the followings increases blood glucose level and regulates mineral ion balance:

   A. Cortisol
   B. Corticosterine
   C. Aldosterone
   D. Both a & b

9. In myelinated neurons the impulse jumps from node to rode (rod of Ranvier). This is called:

   A. Nerve impulse
   B. Saltatory impulse
   C. Presynaptic impulse
   D. Postsynaptic impulse

10. The cytoplasmic process arising from the cell body of neuron that carries impulse towards cell body is called a:

    A. Axon
    B. Dendrite
    C. Nissl’s granule
    D. Myelin sheath