What is the order of events in an action potential quizlet?
Terms in this set (14)
- dendrite recieves a stimulus.
- depolarization of cell membrane.
- generation of action potential.
- action potential moves down axon.
- repolarization occurs.
- action potential arrives at axon terminal.
- calcium channels open and calcium ions move into the neuron.
What are the events of action potential quizlet?
Terms in this set (9)
- Na/K pumps maintain resting potential.
- The neuron receives a stimulus.
- a few sodium channels open at the part of the axon near the cell body.
- membrane potential reaches threshold.
- additional sodium channels open.
- the membrane potential becomes positive.
- sodium channels close and potassium channels open.
Which of the following events occurs first in an action potential quizlet?
Which of the following events is the first to occur during an action potential? Sodium channels open.
What is the action potential quizlet?
action potential. a phenomenon of excitable cells, such as nerve and muscle, and consists of a rapid depolarization (upstroke) followed by repolarization of the membrane potential. Action potentials are the basic mechanism for transmission of information in the nervous system and in all types of muscle. Depolarization.
What is the first event of an action potential quizlet?
The first step with regards to the generation of an action potential is the opening of voltage-gated potassium channels at the axon hillock.
What is the order of events in action potential?
The action potential has three main stages: depolarization, repolarization, and hyperpolarization. Depolarization is caused when positively charged sodium ions rush into a neuron with the opening of voltage-gated sodium channels.
Which of the following events occur during an action potential?
Terms in this set (10) Which of the following events is the first to occur during an action potential? Sodium channels open. restore the distribution of ions inside and outside a neuron’s membrane following an action potential. the inside of the neuron becomes positively charged relative to the outside.
What are the events that occur during an action potential?
The diagrams below show the sequence of events that occur during an action potential. 1. When a neuron is at its resting potential, the inside of the cell has a negative charge relative to the outside. 2. A stimulus begins to change the distribution of charge across the membrane. 3.
What are the 4 steps of an action potential?
What are the 4 steps of an action potential? An action potential is caused by either threshold or suprathreshold stimuli upon a neuron. It consists of four phases: depolarization, overshoot, and repolarization. An action potential propagates along the cell membrane of an axon until it reaches the terminal button.
What event triggers the generation of an action potential?
Voltage-gated potassium channels are either open or closed. There are three main events that take place during an action potential: A triggering event occurs that depolarizes the cell body. This signal comes from other cells connecting to the neuron, and it causes positively charged ions to flow into the cell body.
What are the steps of an action potential?
Step One: Reaching Threshold.