How does hyperpolarisation decrease amplitude of an action potential during a train of action potentials

Q: Explain what is meant by summation of graded potentials, and explain how summation may lead to an…

A: The “fundamental unit” of the nervous system is the neurons or nerve cells. These electrically…

Q: Explain how axon diameter and myelination affect conduction velocity.?

A: Axon is a slender long projection of a neuron or nerve cell. It conducts the electrical impulses…

Q: What are the steps to action potential

A: Action potential  An action potential is a short burst of electrical event that occurs in the…

Q: What is the relationship between action potentials andimpulses?

A: The nervous system is highly complex among different organ systems in animals. By transmitting…

Q: Describe how graded potentials can lead to an action potential (temporal summation and spatial…

A: The measurable brain reaction to a given sensory, cognitive, or motor event is known as an…

Q: b) Draw a diagram indicating how the ion concentrations will change during the depolarization phase…

A: During the generation of a nerve impulse the neuronal cells send an action potential to the next…

Q: Describe the difference between graded and action potentials.

A: Graded potentials are caused by external stimuli (in sensory neurons) or by neurotransmitters…

Q: Explain the relationship between threshold potential and an action potential.

A: An action potential can be defined as the phenomenon when there occurs at excitation of the nerve or…

Q: What does summation mean when we talk of postsynaptic potentials? When is summation non-linear?

A: Introduction  Postsynaptic potentials are those that usually occur as a result of alterations near…

Q: Explain how frequency of action potentials differs from the velocity of an action potential…

A: Action potential exists when the membrane potential of a particular cell position rapidly rises and…

Q: What is summation with regards to action potentials?

A: Introduction:- The potential of action is the rapid rise and subsequent collapse of electrical or…

Q: The axon of neurone is stimulated experimentally with 25 mv pulse which initiates an action…

A: A neuron is made up of a soma or cell body and a neurite. Neurons transmitting signals away from the…

Q: How graded potentials differ from action potential?

A: Nervous system is the complex system in our body which controls the entire body and coordinates the…

Q: f the absolute refractory period of a neuron is 0.7 milliseconds, what is the maximum frequency of…

A: The trick used by the nervous system is that the intensity of the stimulus is encoded into the…

Q: Discuss the production of an action potential, includingdepolarization and repolarization

A: An action potential is defined as a sudden, fast, transitory, and propagating change of the resting…

Q: How do ion channels and sodium-potassium pumps contribute to the resting potential?

A: Ion channels are pore forming membrane proteins that allow ion to pass through the channel pore.…

Q: Explain the all-or-none law of action potentials, and describe the effect of increased stimulus…

A: In reaction to stimuli, the axon membrane permeability to and depends on the opening of gated…

Q: What is the relative importance of the Na+/K+ pump in action potential propagation?

A:

Q: Step-by-step, explain how an action potential is produced.

A: Action potential are potential difference created in axons of neurons for the transfer of nerve…

Q: Describe the voltage-gated ion channels that are essential for the development of the action…

A: IONIC BASES OF EACH PHASE OF ACTION POTENTIAL : the depolarization and repolarization phase of the…

Q: What happens when a graded potential occurs?

A: Graded potential is produced when a ligand opens a ligand gated channel in a dendrite allowing ions…

Q: Describe the creation of an action potential and explainhow it is propagated.

A: An action potential is an immediate increase and subsequent fall in membrane potential across a…

Q: How are Depolarization and graded potential caused?

A: Depolarization is also known as Hypopolarization. Depolarization results in a change in the electric…

Q: Explain functions of graded potential, resting potential, and action potential seen in neurons?

A: Neurons are the unit of neural system that helps in communicating point to point and helps in…

Q: How can an EPSPs ability to stimulate action potential be enhanced?

A: The neuron is a specialized cell that is capable of generating an action potential on the cell…

Q: Give examples of graded potential, resting potential and action potential  seen in neurons.

A: Neurons are nerve cells that functions as the basic working unit of brain. They can carry…

Q: Explain the role of ion channels and sodium-potassium pumps in the establishment of the resting…

A: An action potential can be defined as a sudden, fast, transitory, and propagating change of the…

Q: What is resting potential?

A: Plasma membrane is the outer boundary of the cell. It is selective permeable in nature that is it…

Q: An increase in the magnitude of depolarization by a graded potential will increase the threshold…

A: Graded potentials occur in plasma membrane of cells but in neurons they occur in the synaptic…

Q: Explain the process of action potential in laymans terms.

A: The neurons are the cells of nervous system that are responsible for the generation and transmission…

Q: Which is bigger, a graded potential or an action potential? Which travels further? Which initiates…

A: Neurons are a special type of nerve cells with the purpose of transferring information around the…