PHYSIOLOGY- Nerve and Muscle MCQs

Results

#1. The water content of skeletal muscle is:

20%

60%

40%

75%

#2. The muscle haemoglobin is:

Oxyhaemoglobin

Carboxyhaemoglobin

Myohaemoglobin

Sulphur methyl haemoglobin

#3. The lactic acid percentage in resting muscle is:

0.02%

0.08%

0.10%

0.2%

#4. The striation in smooth muscles is:

Longitudinal and transverse

Transverse

Longitudinal

All of the above

#5. The T system is pre-eminent and present at Z-line in:

Skeletal muscle

Smooth muscle

Cardiac muscle

All of the above

#6. The whole contraction period is absolute refractory in:

Smooth muscle

Skeletal muscle

Cardiac muscle

All of the above

#7. The maximum protein is present in the muscle type:

Skeletal

Cardiac

Smooth

Mixed type

#8. Tetanus is not possible in cardiac muscle due to:

Long refractory period

Prolong relaxation phase

Short refractory period

All of the above

#9. The muscle having highest blood supply is:

Skeletal muscle

Cardiac muscle

Smooth muscle

All of the above

#10. The minimum galvanic current when allowed to flow indefinitely will exit a tissue is:

Chronaxie

Barthomocity

Rheobase

Excitability

#11. The maximum conduction velocity in unmyelinated:

10 mt/sec

5 mt/sec

1 mt/ sec

4 mt/ sec

#12. As per Sunderland grading of injury interruption of endoneurial injury is:

Second degree injury

First degree injury

Fourth degree injury

Third degree injury

#13. The competitive blockers are:

Tubocurarine and gallamine

Suxamethonium

Dexamethonium

Salbutamol

#14. The disease associated with antibodies against calcium channel in nerve ending of neuro- muscular junction manifests as syndrome is:

Lambert-Eaton syndrome

Myasthenia gravis

Auto-immune thyroiditis

Systemic lupus erythematosus

#15. Red muscle fibres are resistant to fatigue as:

They are large in size

They contain numerous nucleoli

They are highly vascular and have abundant rnitochon- drion

They contain endoplasmic reticulum

#16. In isotonic muscle contraction the amount of energy expan- ded in doing work is:

Approximately 20%

Approximately 10%

Approximately 25%

Approximately 50%

#17. Voltage-gated channels are highly concentrated up to 2000-12000% at:

Node of Ranvier

Initial segment of axon

Dendrites

Soma

#18. The nerve growth factor involved in maintenance of cutaneous mechanoreceptors is:

Nerve growth factor

Neurotrophins 3, 4

Brain derived neurotrophic factor (BDNF)

None of the above

#19. When axon gets damage or cut the part distal to it degene- rates and the process in known as:

Wallerian degeneration

Whipple’s degeneration

Watson’s degeneration

White and Lee degeneration

#20. Sliding filament theory was proposed by:

AF Huxley and HE Huxley

Watson and Bricks

Robertson Hooke

Sunderland

#21. Goldman-Hodgkin-Katz equation states that the membrane potential will be mainly influenced by:

Equilibrium potential for ion to which membrane is least permeable

Equilibrium potential for ion to which membrane is most permeable

Equilibrium potential for all ions to which they are partially permeable

All of the above

#22. The duration of action potential in cardiac muscle is:

20-30 millisecond

1-2 millisecond

200-300 millisecond

400-500 millisecond

#23. Resting membrane potential in neurons is:

– 70 m V

– 90 m V

+35 m V

+ 10 m V

#24. Absolute refractory period is:

Period from the firing level is reached the time repolarization is 1/3rd complete

Period from the firing level is reached till time repolarization is half complete

Period from the firing level is reached till time repolarization is 2/3rd complete

None of the above

Finish

Results

#1. The water content of skeletal muscle is:

#2. The muscle haemoglobin is:

#3. The lactic acid percentage in resting muscle is:

#4. The striation in smooth muscles is:

#5. The T system is pre-eminent and present at Z-line in:

#6. The whole contraction period is absolute refractory in:

#7. The maximum protein is present in the muscle type:

#8. Tetanus is not possible in cardiac muscle due to:

#9. The muscle having highest blood supply is:

#10. The minimum galvanic current when allowed to flow indefinitely will exit a tissue is:

#11. The maximum conduction velocity in unmyelinated:

#12. As per Sunderland grading of injury interruption of endoneurial injury is:

#13. The competitive blockers are:

#14. The disease associated with antibodies against calcium channel in nerve ending of neuro- muscular junction manifests as syndrome is:

#15. Red muscle fibres are resistant to fatigue as:

#16. In isotonic muscle contraction the amount of energy expan- ded in doing work is:

#17. Voltage-gated channels are highly concentrated up to 2000-12000% at:

#18. The nerve growth factor involved in maintenance of cutaneous mechanoreceptors is:

#19. When axon gets damage or cut the part distal to it degene- rates and the process in known as:

#20. Sliding filament theory was proposed by:

#21. Goldman-Hodgkin-Katz equation states that the membrane potential will be mainly influenced by:

#22. The duration of action potential in cardiac muscle is:

#23. Resting membrane potential in neurons is:

#24. Absolute refractory period is:

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