Question: What Is Latent Period In Action Potential?

Which muscle cells have the greatest ability to regenerate?

Smooth cells have the greatest capacity to regenerate of all the muscle cell types.

The smooth muscle cells themselves retain the ability to divide, and can increase in number this way..

What is latency in action potential?

A: The latency of the beginning of the CAP reflects how long it takes for the fastest fibres to conduct action potentials from the stimulus source to the recording electrodes. When the latency is measured to the peak of the CAP, we obtain the latency of an average fibre in the nerve.

What is happening during the latent or lag phase?

The time between the activation of a motor neuron until the muscle contraction occurs is called the lag phase (sometimes called the latent phase). During the lag phase a signal called an action potential moves to the end of the motor neuron (axon terminal).

What is the time of the latent period?

The latent period, or lag phase, the contraction phase, and the relaxation phase. The latent period is a short delay (1-2 msec) from the time when the action potential reaches the muscle until tension can be observed in the muscle.

How does temperature affect action potential?

As the temperature is increased, the amplitude of action potential is decreased and its duration is reduced. … Cooling reduces the resting potential (depolarization) and this leads to a rise in action potential frequencies; but certain nerve cells show a frequency increase when temperature is raised.

Does increasing stimulus amplitude change latency?

As described earlier, CAP amplitude increased (became more negative) and latency decreased with increasing stimulus intensity.

What occurs in the latent period?

3 – A Myogram of a Muscle Twitch: A single muscle twitch has a latent period, a contraction phase when tension increases, and a relaxation phase when tension decreases. During the latent period, the action potential is being propagated along the sarcolemma.

Does the latent period change with different stimulus?

The latent period did not change with changes in stimulus voltage.

Why is latent period important?

A latent period allows study of alterations of anatomy and physiology before, during, and after onset of epileptogenesis and the model, therefore, may be ideal for experiments focused on underlying cellular mechanisms and antiepileptogenic strategies.

Is the latent period the same as latency?

In epidemiology, particularly in the discussion of infectious disease dynamics (modeling), the latent period (also known as the latency period or the pre-infectious period) is the time interval between when an individual or host is infected by a pathogen and when he or she becomes infectious, i.e. capable of …

Why relaxation period is longer than contraction period?

Following the latent period is the contraction phase in which the shortening of the sarcomeres and cells occurs. Then comes the relaxation phase, a longer period because it is passive, the result of recoil due to the series elastic elements of the muscle.

What happens if the latent period for an infection is longer than the incubation period?

If the latent period is longer than the incubation period, then people are infectious only after symptoms start. This means they can be recognised as being ill before they are infectious.

What is the difference between latency and incubation period?

This stage of subclinical disease, extending from the time of exposure to onset of disease symptoms, is usually called the incubation period for infectious diseases, and the latency period for chronic diseases. During this stage, disease is said to be asymptomatic (no symptoms) or inapparent.

What does latency period mean?

Listen to pronunciation. (LAY-ten-see PEER-ee-ud) The time that passes between being exposed to something that can cause disease (such as radiation or a virus) and having symptoms.

Why did the latent period become longer as the load became heavier?

The latent period increases as the weight of the load gets heavier, this is for the necessary force to be generated by the muscle. … It would take longer with the heavier weight because as the weight of the load increases, so does the latent period time and the shortening velocity speeds.

What is latency period in fish?

Latency period is being described as the time interval between injection of the female fish and stripping of eggs. … The ripening of the ovary after injection depends on the type of hormone used to introduce the female fish (Crandell et al., 1995).

What is the latency period for asbestos?

Asbestosis has a long latency period, which means the disease usually does not develop until years after the asbestos exposure that caused it. In most cases, asbestosis symptoms take 20 to 30 years to present from the time someone is initially exposed to asbestos.

What causes rigor mortis?

Rigor mortis is due to a biochemical change in the muscles that occurs several hours after death, though the time of its onset after death depends on the ambient temperature. The biochemical basis of rigor mortis is hydrolysis in muscle of ATP, the energy source required for movement.

What occurs during the latent period of isometric contractions?

What occurs during the latent period of these isometric contractions? a. The length of the muscle fiber is sliding into an optimal length. … All the steps of excitation-contraction coupling occur.

Does stimulus intensity affect latency?

With increasing stimulus intensity there was a gradual decrease of latency duration along the regression line (equation of regression line was y = 5.60 – 0.0086 x for control ! group of healthy people and y = 10.414 – 0.0279 x for group of patients).

What is latent phage?

A prophage is a bacteriophage (often shortened to “phage”) genome inserted and integrated into the circular bacterial DNA chromosome or exists as an extrachromosomal plasmid. This is a latent form of a phage, in which the viral genes are present in the bacterium without causing disruption of the bacterial cell.