Dr Gawad Course Online Exam - Excitable - Lec 2 (Action Potential, Compound Action Potential, All Or None Rule)
9 MCQs (Only one correct answer)Each MCQ: 1 mark, Total mark: 9Allowed time: 10 minGood Luck
- 1.The main cause of depolarization of nerve is:
- A.
K outflux
- B.
Na influx
- C.
Cl outflux
- D.
None of the above
- 2.At stage of complete depolarization of action potential of the curve
- A.
K out flux is the major change
- B.
Na out flux is the major change
- C.
The potential difference between outer and inner surface is Zero
- D.
Na-K pump is acting with full capacity
- 3.Reversal of polarity, which is true:
- A.
Outer membrane is more negative than inner membrane.
- B.
Action potenial is – 50 mv
- C.
Potential magnitude is + 35 mv
- D.
None of the above
- 4.Repolarization of nerve coincides with:
- A.
Influx of Na
- B.
Out flux of K
- C.
Out flux of Cl
- D.
Impermeability of the membrane to protein
- 5.Ascending limb of nerve action potential is due to Na movement through
- A.
Leak channels
- B.
Ligand gated channels
- C.
Voltage gated channels
- D.
None of the above
- 6.Which of the following is a representation of hypopolarized state:
- A.
Stage of rapid depolarization
- B.
After depolarization
- C.
After hyperpolarization
- D.
All after potential stages
- 7.Which of the following is false regarding compound action potential:
- A.
The largest the diameter the fastest velocity conduction
- B.
Myleinated (medullated) nerves are faster than non myleinated
- C.
The larger the diameter the longer the duration of the spike
- D.
- the larger the diameter the bigger the magnitude of action potential
- 8.Which of the following is not applying all or none rule:
- A.
Single nerve fiber
- B.
Single nerve fiber of mixed nerve
- C.
Whole skeletal muscle
- D.
Cardiac muscle
- 9.The main cause of after hyperpolarization is
- A.
Delayed Na channel closure
- B.
Massive inward movement of Cl ions
- C.
Delayed voltage K channels closure
- D.
Na-K pump activation
Questions: 35 | Attempts: 11150 | Last updated: Mar 21, 2022
-
Sample QuestionWarehouses, factories, and power plants are examples of
Questions: 20 | Attempts: 11027 | Last updated: Mar 22, 2022
-
Sample Questionकबीर ने दोनों को मूआ कहा है क्योंकि –
Questions: 50 | Attempts: 10103 | Last updated: Mar 19, 2022
-
Sample QuestionThe real estate broker's responsibility to keep the principal informed of all of the facts that could affect a transaction is the duty of
- Aptitude Test Quizzes
- Clat Quizzes
- Course Test Quizzes
- Driving Test Quizzes
- English Test Quizzes
- Fcat Quizzes
- General Knowledge Quizzes
- Intelligence Test Quizzes
- Medical Test Quizzes
- Mock Test Quizzes
- Philosophy Test Quizzes
- Practice Test Quizzes
- Pretest Quizzes
- Safety Test Quizzes
- Skill Assessment Quizzes
- Spelling Test Quizzes
- Standardized Test Quizzes
Back to top