If the membrane potential at the axon hillock becomes subthreshold, an action potential will be fired.   True  or false

Q: a.Would an action potential travels faster in an axon with a wide diameter or a small diameter? b.…

A: The structural and functional unit of the nervous system is called a neuron. A neuron is composed of…

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: A change in the axon membrane potential from -70 mV to -64 mV would be called a depolarization…

A: RESTING MEMBRANE POTENTIAL: The ground value of a trans-membrane voltage that remains static unless…

Q: Use Figure Q1(b) of an action potential to answer questions (i) until (iv) below. Choose the correct…

A: The neurons have the capability of generating and transmitting nerve impulses throughout the body.…

Q: A 100-um diameter nerve axon has the following properties: rm = 2.5 x 104 ohm x cm, ri = 1 x 105…

A: The resting Vm is the membrane potential when no current is flowing through the axon. It is the…

Q: Which phase in the generation of action potential is represented by N? +30 M N K -55 -70 Time…

A: Whenever a neuron is triggered by a stimulus, it experiences a brief shift in electrical potential…

Q: Explain how action potentials are conducted by an unmyelinated axon.

A: Neurons are the basic unit of the nervous system that carry electrical stimuli throughout the body.…

Q: During the _____ phase of an action potential, both gates of the voltage regulated sodium channels…

A: The action potential (AP) is generated by the neurons and the muscle cells. The AP is comprised of…

Q: Explain how myelination of the axon results in saltatory conduction, and how this increases the…

A: Neurons are the basic umit of the nervous system and helps in control qnd coordination.

Q: Tru or

A: There is release of neurotransmitters by the inhibitory pre synaptic neurons that bind to the post…

Q: Explain why the strength of an action potential doesn’t decrease as it travels down an axon.

A: Action potential involves a transient change in the potential of a neuronal membrane that is caused…

Q: If a graded receptor potential made the resting membrane potential of the axon more negative, you…

A: Instead of being all-or-nothing, graded potentials are changes in membrane potential that come in…

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: Why is the cell unable to initiate another action potential if stimulated during the refractory…

A: The time between two consecutive action potentials is called refractory period. Action potential…

Q: Define the refractory period in the propagation of action potential in two sentences. Give its…

A: Introduction: The brief cascade of events in the membrane potential after excitation is termed…

Q: A patient is given a drug that blocks the L-Type calcium channel blocker. Which phase of the action…

A: Signal transduction pathways translate signals received at the cell's surface into cellular…

Q: Describe what happens in the nerve terminal when an action potential reaches there

A: Neuron or nerve cells are cells that act as messengers, they are able to undergo  electrical…

Q: ATP is used to power the creation of a neuron's resting potential. True False

A: Resting potential of the neuron is -70 mV.

Q: During the _____ phase of an action potential, the membrane potential is more positive than the…

A: Phases of generation of action potential from resting membrane potential  Depolarisation…

Q: Immediately after an action potential is .34 propagated, which one of the following ions :rapidly…

A: Action potential of a neuron is caused due to a change in the cationic gradients - sodium and…

Q: Each of the following is a correct relationship between action potential phase and channel status…

A: BASIC INFORMATION NEURON   It is the longest cell inside the human body  It is found in the brain…

Q: Temporal summation occurs when local potentials overlap in time.   a TRUE   b FALSE

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

Q: Is an action potential more or less likely under these conditions? Explain.

A: Here, we are asked to explain the behavior's of an unaffected neuron at its membrane resting…

Q: If the middle of an axon were depolarized to threshold, in which direction could the action…

A: Neurons are the basic unit of the nervous system. They are involved in the transmission of nerve…

Q: At the membrane of an axón, the action potential is -60 mV for K+ ions. Calculate the external and…

A: In the question we are given with action potential of the axon= -60 mV for K+ ions. We can determine…

Q: TRUE OR FALSE? Do translatory conduction involves the entire length of the axon in the propagation…

A: TRUE OR FALSE? Do translatory conduction involves the entire length of the axon in the propagation…

Q: If a neuron is stimulated simultaneously by 2 stimuli at its dendrites (one generates a very large…

A: The cells of nervous system are called neurons. They have 3 distinct parts, including the body of…

Q: which way does the neurotransmitter NO move

A: The chemical messengers that transmit a message from a nerve cell to a target cell across the…

Q: At the membrane of an axón, the action potential is -60 mV for K+ ions. Calculate de external and…

A: Action potentials are produced by axons and transmitted to local neurons. When a local neuron gets…

Q: Two axons are tested for propagation velocities (speeds). One carries action potentials at 50 meters…

A: A neuron is which it is composed of three main parts, the dendrites, the cell body, and the axon. An…

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: What stage of the action potential is illustrated by the set up shown? interstitial fluid anon…

A: Action potential takes place through a series of events that occurs when an nerve impulse in…

Q: An action potential does not get smaller as it propagates along an axon. Why not?

A: The nervous system has the control for the conduction of the electrical impulses from the…

Q: Action potentials are produced by voltage-gated channels True False

A: In most animal cells, the membrane potential is dictated predominantly by the potassium ions…

Q: State

A: Action potential:- The change in electrical potential associated with the passage of an impulse…

Q: Two excitatory synapses on a neuron fire at the same time as one inhibitory neuron. Each synapse…

A: Synapse is also known as neuronal junction and it allows a neuron to pass an electrical or chemical…

Q: The arrival of the action potential to the end of neuron causes:

A: When the action potential reaches the end of the neuron , it causes neurotransmitter containing…

Q: During the action potential waveform, the voltage returns to the resting membrane potential at -70mV…

A: An action potential is a rapid change in the electrical potential of a cell membrane, caused by the…

Q: Synaptic terminal Neurotransmitter SENDING NEURON Vesicle Calcium channel Receptor for…

A: The transmission of nerve impulse from one neuron to the next neuron is performed by either chemical…

Q: Hyperpolarization of a graded potential can be: Stimulatory Inhibitory Are both Or none…

A: All cells have an electrical potential difference, or membrane potential, across their plasma…

Q: A drug that blocks Na+ channels in neurons does so not only in the axon but also in the dendrites…

A: Sodium channel blockers are used clinical for various purposes like local anaesthetic agent,…

Q: the refractory period limits the number of action .2 potentials that a given nerve cell can produce…

A: Action potential of a neuron is caused due to a change in the cationic gradients - sodium and…

Q: When a presynaptic neuron fires action potentials

A: An action potential can be outlined as a rapid increase and decrease in the voltage potential across…

Q: Explain how an action potential is propagated down an axon in continuous conduction. Why is…

A: Introduction:- Sequence of changes the RMP undergoes in response to threshold stimulus give rise to…