Question

To start conduction of impulse, the value of action potential must not be
A) Less than threshold value
B) More than threshold value
C) Equal to threshold value
D) All of the above

Answer 1

At the beginning of the action potential Na + channel open & Na + moves to the auxon

Answer 2

Answer:

To start conduction of impulse, the value of action potential must not be A) Less than threshold value.

Explanation:

• What is conduction of impulse? Conduction of nerve impulse occurs due to the presence of active and electronic potentials along the conductors. Transmission of signals internally between the cells is achieved through a synapse. Nerve conductors comprise relatively higher membrane resistance and low axial resistance.
• An action potential is generated when a stimulus changes the membrane potential to the values of threshold potential. The threshold potential is usually around -50 to -55 mV. It is important to know that the action potential behaves upon the all-or-none law.
• Every time you do something, from taking a step to picking up your phone, your brain transmits electrical signals to the rest of your body. These signals are called action potentials. Action potentials allow your muscles to coordinate and move with precision. They are transmitted by cells in the brain called neurons.

Hence, option A which is less than threshold value is correct answer.

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