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WHAT IS THE LOWEST VOLTAGE NEED TO LIGHT A LIGHT BULB?
A light bulb is manufactured to operate on a specific voltage. The voltage can be a low as needed and the manufacturer will compute the size of the filament that is needed for a specific wattage. If you are referring to a threshold voltage then that is another question that needs to be asked.
What opens first in response to threshold stimulus?
The activation gates of voltage-gated Na+ channels open, and Na+ diffuses into the cytoplasm.
Is an action potential fired in response to any nerve stimulus?
No, there must be a sufficient voltage summed up from all the inputs to be at or above the trigger voltage. Usually a single input is not sufficient.
What voltage produced maximal contraction of the muscle?
The voltage that produces maximal contraction of a muscle is called the maximal stimulus voltage. This voltage is typically higher than the threshold voltage required to elicit a muscle contraction and ensures that all muscle fibers within a motor unit are stimulated to contract simultaneously, leading to a stronger contraction.
Is conducting stimulus strong enough to generate a nerve impulse?
Yes, a stimulus needs to reach a certain threshold level of strength in order to generate a nerve impulse. This threshold is required to depolarize the cell membrane and initiate the action potential. If the stimulus is not strong enough to reach this threshold, no nerve impulse will be generated.
What is the lowest stimulus voltage that induces active force in the skeletal muscle?
It is called the threshold voltage and is around -70 mvolts.
Why is the threshold voltage for nerve lower than the threshold voltage for muscle?
assignment sa physiology ceu? XD
Difference between Threshold voltage and knee voltage?
the voltage at which electronic device operates is callled threshold voltageand the voltage at which device show cinduction in forward biased stste
What is a threshold voltage in scr?
the voltage at which the current conduction occur
What is mean by thresold voltage?
the device oprates on the minimum voltage. in this voltage is called threshold voltage.
What is threshold voltage of a muscle?
1.5
Why is a Schmitt trigger called a regenerative comparator?
A Schmitt Trigger is a comparator, because it compares its input voltage to a "threshold" voltage, but it has _two_ threshold voltages (the upper and lower trigger voltages), and which threshold voltage is used depends on the output state. If the input voltage is higher than the upper trigger voltage, the output will be high (for a non-inverting Schmitt trigger). In this state, the input is compared to the lower threshold voltage, so the input now has to go below the lower threshold voltage before the output will go low. The threshold voltage depends on the output state, such that a high output selects the lower threshold voltage, and a low output selects the upper threshold voltage. This can be visualised as using a fixed threshold but adding a small voltage (the difference between the upper and lower threshold voltages, also called the hysteresis voltage) to the input voltage before it is compared. This small added voltage is high when the output is high, and low when the output is low. A small amount of the output voltage is effectively being added to the input voltage before it is compared to a fixed threshold. This is positive feedback, also called regenerative feedback. So a Schmitt trigger operates as a voltage comparator, and a small amount of the output is added to the input, so it uses positive or regenerative feedback.
What is the voltage threshold for GAAs?
1.7 volts
What is lower threshold voltage?
the voltage above which any device starts conducting
Why is the threshold voltage for nerve lower than the threshold voltage for muscles?
The threshold voltage for nerves is lower than for muscles because nerves rely on smaller ion channels that open more easily, allowing for faster nerve conduction. In contrast, muscle cells have larger ion channels that require a higher voltage to open, resulting in a higher threshold voltage for muscle activation.
Can rheobase be a threshold stimulus?
Yes, it can be because threshold and rheobase both are the voltage required to generate an action potential. The difference lies in that the treshold can be a voltage higher than rheobase.
What is the minimal level of stimulus to cause a muscle contraction?
it is known as the threshold stimulus usually seen in tonic contraction
