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The all-or-none principle states that...

The all-or-none principle states that

A

A) the properties of an action potential are independent of the strength of the depolarising stimulus

B

B) all stimuli will produce action potentials

C

C) all graded potentials will generate action potential

D

D) any cell membrane can generate and propagate an action potential if stimulated to threshold

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ICSE-NEURAL CONTROL AND COORDINATION-(Review question) long answer
  1. The all-or-none principle states that

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  2. How does nerve impulse travel in axon ?

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  3. How does nerve impulse travel across axon ?

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  4. Give a well labelled diagram of the eye. Explain the phenomenon for th...

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  5. Explain a reflex arc along with a diagram

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  6. Give a well labelled diagram of spinal cord explaining its various par...

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  7. What is the mechanism of hearing ?

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  8. What are the effects of sympathetic and parasympthetic system on vario...

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  9. Explain the functions of various parts of the eye.

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  10. What is the primary function of the neuroglia cells ? What special str...

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  11. How does a wave of depolarisation spread along a nerve fibre ?

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  12. What is a synapse ? How does the nerve impulse cross the synapse ?

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  13. What is the action potential of a neuron ? Do all neurons possess the ...

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  14. Why is the mode of conduction of electrical impulse along the myelinat...

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  15. (a) Make a clearly labelled diagram of the inner ear of a human being....

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  16. Are rods and cones evenly distributed over the entire surface of the r...

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  17. Blind spot in the eye is devoid of the ability of vision. Why is it so...

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  18. If a strong odour is smelled continously for sometime the sensation of...

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  19. Which parts of the nervous system participate in the maintenance of ba...

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  20. What is a reflex ? What units of the nervous systems are involved with...

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  21. Which nerve tract connects the right and left hemispheres of the cereb...

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