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The bending of sterocilia toward the direction of the kinocilium of a hair cell causes?
The bending of stereocilia towards the kinocilium of a hair cell results in the opening of mechanically gated ion channels, allowing an influx of ions such as potassium. This depolarizes the cell, triggering the release of neurotransmitters at the synapse with sensory neurons, which then sends signals to the brain for auditory processing.
The combining of the neurotransmitter with the muscle membrane receptors causes the membrane to become permeable to sodium ions and blank of the membrane?
The combining of the neurotransmitter with the muscle membrane receptors causes the membrane to become permeable to sodium ions and depolarization of the membrane. This depolarization triggers an action potential that leads to muscle contraction.
The greater influx of sodium ions results in what of the membrane?
The greater influx of sodium ions results in membrane depolarization. This is because sodium ions carry a positive charge, which leads to a decrease in the membrane potential towards zero or a positive value.
The interior of the cell becomes less negative due to an influx of sodium ions?
The influx of sodium ions causes depolarization of the cell membrane, making the interior less negative. This depolarization can trigger the opening of voltage-gated ion channels, leading to the propagation of an action potential. Sodium-potassium pumps work to restore the original ion concentrations, repolarizing the cell.
What is a change in the environment that causes a. Response?
stimulus
How is the stereocilia affected by sound?
Sound causes the stereocilia (hair cells) in the inner ear to vibrate. This movement triggers the release of neurotransmitters which sends signals to the brain to interpret as sound. Prolonged exposure to loud sounds can damage the stereocilia, leading to hearing loss.
Binding of the Acetylcholine to receptors causes a by opening what channels that permit both potassium and sodium to permeate the membrane?
Binding of acetylcholine to nicotinic acetylcholine receptors opens ion channels that allow both sodium and potassium ions to permeate the membrane. This causes depolarization of the membrane potential, leading to an excitatory response in the cell.
Is depolarization the same as contraction in the heart?
The nerve impulse causes the release of acetylcholine from the motor end plate. This causes the depolarization of the membrane of the adjacent muscle cell.
What causes Local depolarization that leads to generate action potential?
Local depolarization is caused by the opening of voltage-gated sodium channels in response to the binding of neurotransmitters or other stimuli. This influx of sodium ions results in membrane depolarization, reaching the threshold potential needed to generate an action potential.
The bending of sterocilia toward the direction of the kinocilium of a hair cell causes?
The bending of stereocilia towards the kinocilium of a hair cell results in the opening of mechanically gated ion channels, allowing an influx of ions such as potassium. This depolarizes the cell, triggering the release of neurotransmitters at the synapse with sensory neurons, which then sends signals to the brain for auditory processing.
What causes the inside of the membrane to reverse charge and begin action potential?
During an action potential, voltage-gated ion channels open in response to depolarization, causing an influx of sodium ions into the cell. This influx of positive ions triggers the reversal of charge inside the membrane, producing an action potential.
The combining of the neurotransmitter with the muscle membrane receptors causes the membrane to become permeable to sodium ions and blank of the membrane?
The combining of the neurotransmitter with the muscle membrane receptors causes the membrane to become permeable to sodium ions and depolarization of the membrane. This depolarization triggers an action potential that leads to muscle contraction.
The greater influx of sodium ions results in what of the membrane?
The greater influx of sodium ions results in membrane depolarization. This is because sodium ions carry a positive charge, which leads to a decrease in the membrane potential towards zero or a positive value.
Which part of a feedback mechanism causes change to make up for the departure from the set point?
The effector is the part of a feedback mechanism that causes change to make up for the departure from the set point. It receives signals from the control center and produces a response to bring the system back to its desired state.
What causes depolarisation of sarcolemma of muscle fibre?
An incoming action potential to an alpha motor neuron causes acetylcholine (Ach)release at the end plate, Ach binds to Ach receptors on the sarcolemma causing a sodium influx which causes depolarization.
What causes a QRS wave?
A QRS wave is caused by the depolarization of the ventricles of the heart, which leads to the contraction of the ventricles and the pumping of blood out of the heart. The QRS complex represents the electrical activity associated with this depolarization.
What is a factor that causes a response?
A stimulus is a factor that causes a response in an organism.
