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The ions that enter the muscle cell during action potential generation are?
Sodium ions (Na+) enter the muscle cell during the depolarization phase of an action potential, causing the cell membrane to become more positively charged. This influx of sodium ions is responsible for the rapid rise in membrane potential.
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?
latent period
What event occurs as a result of a muscle action potential?
Reflex action
During the action potential?
During the action potential, there is a depolarization phase where the cell membrane potential becomes less negative, followed by repolarization where it returns to its resting state. This involves the influx of sodium ions and efflux of potassium ions through voltage-gated channels. The action potential is a brief electrical signal that travels along the membrane of a neuron or muscle cell.
What is the duration of action potential of skeletal muscle?
The duration of action potential in skeletal muscle is typically around 2-4 milliseconds. This includes the depolarization phase (around 1-2 milliseconds) and repolarization phase (around 1-2 milliseconds).
An electrical impulse moving down an axon is called?
An electrical impulse moving down an axon is called an action potential. This process involves the rapid depolarization and repolarization of the axon membrane in response to a stimulus, allowing for the transmission of signals along the neuron.
What is the term for the rapid rise and fall in force produced by a muscle fiber after a single action potential?
A twitch is the rapid rise and fall in force produced by a muscle fiber after a single action potential.
Why is the cardiac action potential longer?
The cardiac action potential is longer than the action potential in other tissues to allow for sufficient time for the heart to contract and pump blood effectively. This extended duration is important in regulating the rhythmic activity of the heart and ensuring coordinated contraction of the cardiac muscle.
In a muscle group the muscle that relaxes during a particular action is what?
gdg
What is relative refactory period?
The relative refractory period is the phase of the cardiac action potential during which a stronger-than-usual stimulus is required to elicit another action potential. It occurs immediately following the absolute refractory period and allows for the heart muscle to be able to respond to a second, stronger stimulus after the initial action potential.
What kind of stimulus travels from the motor neuron to skeletal muscle?
The stimulus that travels from the motor neuron to skeletal muscle is an electrical signal called an action potential. This action potential causes the release of neurotransmitters, specifically acetylcholine, which then stimulates muscle contraction.
What effect does adrenaline have on gut smooth muscle?
It makes the muscle totally relax as it blocks the action potential in the nerves.
