What does the latent period on a Myogram indicate?
Figure 15.15. 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.
What does a Myogram show?
Also called a myogram, an electromyography (EMG) measures muscle response or electrical activity in response to a nerve’s stimulation of the muscle. The test is used to help detect neuromuscular abnormalities.
What is a Myogram anatomy?
Medical Definition of myogram : a graphic representation of the phenomena (as velocity and intensity) of muscular contractions.
What is a Myogram quizlet?
Myogram. The pattern of movement recorded when a muscle is stimulated electrically. Twitch. When a muscle is stimulated so that some of its motor units are activated, it contracts and then relaxes. Latent Period.
What might be happening at the molecular level during rest periods?
What might be occurring on a molecular level during the rest periods? Intracellular ADP and inorganic phosphate are decreasing. Which of the following describes the relationship between length and tension? The active force can increase or decrease, depending on the starting resting length of the muscle.
What is the period of time that elapses between the generation?
What is the period of time that elapses between the generation of an action potential and the start of muscle tension development in a muscle fiber? You correctly answered: The latent period.
What is latent period in pharmacology?
A “latent period” is the lag time between exposure to a disease-causing agent and the onset of the disease the agent causes.
What is the refractory period in a myogram?
The refractory period is the time immediately following a stimulus. This is the time period when a muscle is contracting and therefore will not respond to a second stimulus. Since this is occurring at the same time as the contraction, it does not appear on the myogram as a separate event.
What is the refractory period of a neuron?
The refractory period of a neuron is the time in which a nerve cell is unable to fire an action potential (nerve impulse). Two subsets exist in terms of neurons: absolute refractory period and relative refractory period.
What is the refractory period of action potential?
The Refractory Period. The depolarization that produces Na+ channel opening also causes delayed activation of K+ channels and Na+ channel inactivation, leading to repolarization of the membrane potential as the action potential sweeps along the length of an axon (see Figure 3.12).
What does not appear on a myogram?
This is the time period when a muscle is contracting and therefore will not respond to a second stimulus. Since this is occurring at the same time as the contraction, it does not appear on the myogram as a separate event. Figure 1.The phases of a myogram.