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What are autorhythmic fibers?
They are fibres which generate AP(action potential) which trigger heart contractions.
The structure storing calcium in the skeletal muscle fibers at rest is the?
The structure responsible for storing calcium in skeletal muscle fibers at rest is the sarcoplasmic reticulum. This organelle regulates the release of calcium ions during muscle contraction to trigger the muscle fiber to contract.
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.
How does threshold change during the relative refractory period?
During the relative refractory period, the threshold for excitation is increased compared to the resting threshold. This is because the membrane potential is closer to its resting state, making it more difficult to depolarize the cell and generate an action potential. It requires a stronger stimulus to overcome this increased threshold and trigger another action potential.
A gene having the potential to trigger cancerous changes in a cell?
oncogene
What is a type of boundary that will cause a tsunami?
A subduction zone boundary, where one tectonic plate is forced below another, can cause a tsunami when there is a sudden movement resulting in the displacement of a large volume of water. This can trigger a tsunami, with the potential to generate destructive waves.
Why do you need a trigger to start an explosion?
because chemical and physical reactions cannot occur without a factor to force or cause the reaction. hence you need a trigger to cause an explosion. just the same as enzymes are used to to start the digestive process.
Minimum level of stimulation required to trigger a neural impulse?
The minimum level of stimulation required to trigger a neural impulse is known as the "threshold." This threshold is the minimum amount of neurotransmitter release or electrical stimulation needed to generate an action potential in a neuron. Below this threshold, the neuron will not fire an action potential.
What type of receptor does not trigger a sensation?
Silent receptors are a type of receptor that do not trigger a sensation when stimulated, even though they are capable of detecting stimuli. These receptors do not send signals to the brain to generate a conscious perception.
What is the trigger point at which a neuron will fire called?
Its where there are a lot of sodium channels. Once the trigger zone is 'triggered' to threshold (from -70mV to -55mv), then an action potential occurs. trigger zone in MOTOR neurons are in the axon hillock and in SENSORY neurons, they're in the 1st unmyelinated area (first node of ranvier).
The trigger zone of a neuron includes?
The trigger zone of a neuron includes the axon hillock, where graded potentials are summed together to determine if an action potential will be initiated. It is the region where voltage-gated sodium channels are concentrated and play a crucial role in generating an action potential. If the depolarization at the trigger zone reaches a certain threshold, an action potential will be generated and propagated down the axon.
What are edge triggered and level triggered interrupts?
in the case of edge trigger, it may generate unwanted interrupt when input signal has glitch and so on. on the other hand if edge trigger not seen in some special situation (eg. when process in the service routin) level trigger preffered!
