Two axons are tested for propagation velocities (speeds). One carries action potentials at 50 meters per second, the other at 1 meter per second. Which axon is myelinated?

Q: discuss the process of the neuron firing an action potential from the resting period to the…

A: The process of normal neuronal firing takes place as a communication between neurons through…

Q: Describe the propagation of an action potential. Contrast this eventin myelinated and unmyelinated…

A: An action potential is produced in the body of the neuron and spread through its axon.  The action…

Q: describe how myelination and axon diameter contributes to the increased speed of nerve impulse…

A: The information transmitted by neurons is named nerve impulses. Nerve impulses can roam very rapidly…

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: 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: List four ways in which an action potential is different from a local potential.

A: SOME BASIC INFORMATION ABOUT A NEURON  NEURON   It is the longest cell inside the human body. It is…

Q: Based on the graph, how soon could another action potential be easily initiated (at the end of the…

A: Nerve cells or muscle cells have a tendency to transmit impulses. The changes in the electrical…

Q: "After an action potential has just passed through the axon hillock, the voltage-gated Na+ channels…

A: Thank you for the question  Answer : If a second action potential can be generated it refers to as…

Q: During the relative refractory period: Can select more than one   K+ channels are open. Na+…

A: The action potential propagation is the method in which a stimulus travels through the neurons, and…

Q: conduction velocity will be faster in the patient. conduction velocity will be slower in the…

A: Multiple sclerosis is a permanently disabling disease that affects the brain and the spinal cord. In…

Q: Tetrodotoxin is a poison that prevents voltage-gated channels from opening. Would this toxin prevent…

A: Tetrodotoxin is a potential neurotoxin which is extremely poisonous and can be found in the liver…

Q: Put the events for action potential generation in a neuron in the correct order (From 1-9)

A: Action potential generation is a fundamental process in neurons, allowing them to transmit…

Q: Why are action potentials usually conducted in one direction?(A) Ions can flow along the axon in…

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

Q: An EPSP causes a depolarization of 15 mV on a proximal dendrite.  At the same time, an IPSP causes a…

A: The excitatory postsynaptic potential (EPSP) refers to the change in membrane potential of a…

Q: What is the term used to describe an action potential apparently jumping from one node of Ranvier to…

A: Action potential refers to the change in the voltage or potential across the membrane of the neuron,…

Q: Describe how action potentials are conducted by unmyelinated nerve fibers. Why is saltatory…

A: Introduction :- Conductability is the capacity to conduct the electrical along it's pathway. The…

Q: If an excitatory neurotransmitter binds to the post-synaptic neuron, what type of an event will that…

A:

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: 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: Why does a myelinated axon conduct action potentials faster than a nonmyelinated axon?

A: The neuron is the basic working unit of the brain, a specialized cell designed to transmit…

Q: Describe how following a threshold stimulus, a action potential is carried along an unmyelinated…

A: Myelination refers to the presence of a myelin sheath on the axons. Myelin sheath is composed of…

Q: When they are not being stimulated, neurons have an electrical charge across their membranes called…

A: The control and coordination of the body in humans occur by two systems: the nervous system and the…

Q: Compare the signal conduction speed in myelinated fibers versus unmyelinated ones. Why aren’t all…

A: Ans: Myelination: In this process the fatty sheath which surrounds neuronal process as well as…

Q: Imagine that you are a scientist testing the action potential conduction rates in two different…

A: The neuron is the electrically excitable cells in the nervous system. Nerve fiber or axon is a…

Q: Why is saltatory conduction along a myelinated axon faster than continuous conduction along an…

A: The cell body comprises the nucleus and other cell organelles. Dendrites expand from the cell body…

Q: Areas of myelinated axons create the appearance of  _______ matter, while neuron cell bodies and…

A:

Q: Nucleus Endoneurium Dendrite Myelin sheath Schwann cell Basal lamina Axon Oligodendrocyte Neurosoma…

A: The neurons are the nerve impulse transmitting cells in the nervous system that are present in both…

Q: What are the differences between myelinated and unmyelinated axons? Which conducts axon potentials…

A: Neurons(nerve cells) are defined as the specialized cell which acts as the fundamental unit of brain…

Q: Describe how depolarization occurs along an unmyelinated neuronal axon

A: Propagation of action potential leads to the depolarization of neuron.

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: 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: Correctly label the following parts of a myelinated axon. CNS PNS Oligodendrocyte Schwann cell…

A: Nervous system coordinates and controls the activities of the animals. It is responsible for…

Q: your parther to nd your lab partner have prepared a frog nerve for gatnering data on action…

A: When an a nerve or neuron is stimulated an action potential is fired as a response to simulation.…

Q: Which of the following nerves would be expected to have the slowest conduction rate of action…

A: An axon is a long, slender projection of a neuron (nerve cell) that typically conducts electrical…

Q: Summation means that a post-synaptic neuron only has an action potential if:     there are no…

A: The neurons have the capability of generating and transmitting electrical impulses throughout the…

Q: What is a typical speed of action potential propagation in the absence of myelination?  (Not the…

A: Brain cells called neurons send data and guidelines all through the cerebrum and body. The data is…

Q: Given that graded potentials fade over distance, what type of synapse would be the most effective in…

A: The brain cells are known as neurons. The neurons communicate with each other through neuronal…

Q: If an axon receives two stimuli close together in time, only one AP occurs. Why?

A: An action potential is the electrical form of messages transmitted across the body via the nervous…

Q: Why is the propagation of action potential unidirectional

A: An action potential is a fast ascent and  fall in voltage or membrane potential across a cell…

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…