Dr Gawad Physiology Course Online Exam - Excitable - Lec 3 – Les, Properties Of The Nerve
7 MCQs (Only one correct answer)Each MCQ: 1 mark, Total mark: 7Allowed time: 8 minGood Luckdr Mohammed Abel Gawad
- 1.Which of the following is false regarding local response (local excitatory state)
- A.
There is decrease in RMP
- B.
There is increase in excitability
- C.
It is propagated potential
- D.
Caused by subthreshold stimuli
- E.
Can be summated
- 2.Which of the following is true regarding strength-duration curve:
- A.
Utilization time is the fastest response by the strongest strength.
- B.
Rheobase strength leads to local excitatory state
- C.
The longer the chronaxie the lower the excitability
- D.
None of the above
- 3.Which of the following is not a membrane stabilizer:
- A.
Procaine
- B.
Hypoxia
- C.
Novocaine
- D.
Alkalosis
- 4.Which of the following is true regarding conduction in unmyelinated nerve fibers:
- A.
It is in the form of saltatory conduction
- B.
It saves energy
- C.
It is local unpropagated
- D.
It is in the form of continuous conduction
- 5.Which of the following is true regarding conduction of myelinated nerve fibers:
- A.
It is a continuous conduction
- B.
It is slower than that of unmyleinated fibers
- C.
It is in the form of jumping conduction
- D.
None of the above
- 6.Which of the following is the most excitable area of a myelinated nerve fiber:
- A.
The terminal axon
- B.
Cell body
- C.
Nodes of ranvier
- D.
The internodeal areas
- 7.The first point of repolarization is:
- A.
The last point depolarized
- B.
The first point stimulated (depolarized)
- C.
The myleinated area
- D.
None of the above
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