Which of the following is not correct about myelin sheaths? Select one O A. They are formed by glial cells, namely ollgodendrocytes and Schwann cells. O B. They are fatty menmbranes, O.C. They are responsible for saltatory conduction, the process in which the action potentials jump between nodes of Ranvier OD. They insulate parts of the neuren axon but not the cell body and dendrites. OE. They increase the speed of action potential conduction along an axon by increasing the diamter of the axon.

Q: A graded potential that achieves threshold leads to the generation of an action potential. Which one…

A: Graded potentials are made by outside stimuli in sensory neurons or by neurotransmitters discharged…

Q: Rank the following neurons for their speed of conduction from fastest to slowest: Ranskik die…

A: Brain is the main center for receiving the impulses from different parts of the body and sending…

Q: During a typical action potential in a nerve, which of the following is happening?  Multiple…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: The following figure is showing; Node Node Myelin sheath Node of Ranvier (a) Na+ ONa* Depolarization…

A: Axons are slender fibres that stretch from a neuron, or nerve cell, and are accountable for…

Q: You are recording the electrical activity of a cell body with a resting membrane potential of -70…

A: Given; Resting membrane potential of the cell= -70mV No. of stimuli detected by the cell= 3 from…

Q: What event triggers an action potential?a. Opening of sodium channelsb. Opening of delayed potassium…

A: 1- Opening of delayed potassium channels 3-High concentration of negative ions outside the cell.…

Q: Action potentials are normally initiated at the axon hillock because a. there is a particularly high…

A: When the membrane potential of a given cell location rapidly rises and falls, an action potential…

Q: Given that a neuron's action potential moved at a speed of 105 m/sec, would you expect this neuron…

A: Neuron is the nerve cell present in the nervous system. It transmits the impulse from brain to body…

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: Transmission of the nerve impulse across a synapse isaccomplished bya. the release of Na+ at the…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

Q: Action potentials are generated at receptor sites. If you touch an object tha rough, which one of…

A: The signals for senses and movements in the body are generated from the central nervous system…

Q: Which of the following would increase the speed of a nerve impulse along an axon?A. Decreasing the…

A: The Speed of conduction of nerve impulses is increase by the presence of a myelin sheath . The…

Q: system is affected? Select one: Oa. Type of Neuron Division of the Nervous System Interneuron PNS b.…

A: The nervous system is the portion of an animal's body that controls and transmits signals between…

Q: A change in the voltage across a neuron’s plasma membranethat makes the neuron less likely to fire…

A: The neuron is the structural and functional unit of the nervous system. The neuron is also known as…

Q: Damage to the axons in the spinal cord is typically permanent and debilitating. One promising avenue…

A: Neuroglial cells are nonexcitatory supporting cells that are present in both central(CNS) and…

Q: The difference in charges across the plasma membrane of anunstimulated neuron is calleda. an EPSP.b.…

A: A neuron refers to the structural and functional unit of the nervous system which is involved in the…

Q: (f) Parts of a Neuron A Axon (initial B segment) G H C Synapse: The region where an Faxon terminal…

A: Neuron is the fundamental unit of the central and peripheral nervous system. Its major function is…

Q: Excitatory neurons A and B both synapse with neuron C. Neuron A releasesa neurotransmitter, and…

A: The junction between two neurons is known as a synapse and when a neuron reaches its action…

Q: Which neuron would probably have the fastest traveling action potentials? O Axon 10 µm and…

A: Neurons or nerve cells are the structural functional units of the nervous system. It is composed of…

Q: Ethosuximide is a drug used to treat epilepsy, particularly absence seizures. It blocks ion channels…

A: Ethosuximide is the drug that is used to control the seizure. It helps to control the absence of…

Q: Which of the following examples of synaptic integration is most likelyto lead to an action potential…

A: The cell that lies after the synapsis and receives the neurotransmitter from the presynaptic cell is…

Q: An inhibitory presynaptic neuron can affect a postsynaptic neuron bya. producing an IPSP in the…

A: The communication of neurons with one another occurs at the site of the synapse, where two nerve…

Q: Select one: O A. hyperpolarizing phase; K channels open B. hyperpolarizing phase: Na channels open…

A: The action potential is the change in the electric potential across the plasma membrane.

Q: COLUMN A COLUMN B ANS COL COLUMN D 7. Found only in the 1. Period of repolarization of the neuron…

A: The neurons are the structural and functional unit of nervous system that have the nerve impulse…

Q: Excitatory postsynaptic (EPSP'S) the resting membrane potentials A. have little or no effect b…

A: A current generated in our body in the membranes of the neuron cells. It is due to voltage…

Q: Which results in more action potentials in neuron D, stimulation by only A or B or C? Explain

A: In order to transmit signal from origin to its destination, many neurons are required and these…

Q: Name four types of glial cells in the Central Nervous System, and list a function for ea of these…

A: Glial cells, consisting of microglia, astrocytes, and oligodendrocyte lineage cells as their major…

Q: (f) Parts of a Neuron A Axon (initial C E B segment) G H Synapse: The region where an axon terminal…

A: Neurons (also known as neurones or nerve cells) are the basic units of the brain and nervous system.…

Q: Which statement is true regarding chemical neurotransmission? O An IPSP closer to the soma will…

A: The cells of the nervous system have a significant functionality i.e. Communication. At the neuronal…

Q: You are a famous researcher working in your lab. You isolate a piece of muscle (call it Muscle A)…

A: Introduction The site of transmission of electric nerve impulses between 2 neurons or between a…

Q: Summationa. is caused by combining two or more graded potentials.b. occurs at the trigger zone of…

A: The action potential is the temporary shifts in the potential of the neuronal membrane which results…

Q: Expression of which of the following lowers the threshold for firing action potentials? O A.…

A: The depolarization and repolarization are dependent on the ion movement across the membrane of…