During a typical action potential in a nerve, which of the following is happening?  Multiple choices A. Voltage gated K+ channels are allowing for influx of potassium B. All of these are happening C. Na/K pumps are pumping Na+ in and K+ out D. Voltage gated Na+ channels are allowing for efflux of sodium E. Leak K+ current, with K+ exiting the nerve

Q: What are the neurotransmitters  that bind to ionotropic channels and allow for cation influx? Select…

A: The signalling process cannot operate without chemical messengers called neurotransmitters. They are…

Q: Put the following in the correct order. A. Neurotransmitter release B. Ca2+ entry into the…

A: Nerve cells called neurons are responsible for sending instructions throughout your body to perform…

Q: Match the description with the statement that best describes the following regions e dendrites +…

A: Neuron:

Q: Charge from depolarization along the axon reaches the axon terminal, but there is a lack of…

A: Neurotransmitters can be defined as a chemical molecules that are involved in the transmission of…

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: 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: The Na+/K+ ATPase pump is a. not required for action potential firing. b. important for…

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: During the depolarization phase of an action potential, the permeability of the membranea. to K+ is…

A: Action potentials are typically electrical signals, which serves to transmit a signal or message…

Q: What guarantees that there are unidirectional action potentials? Choice A threshold  B.…

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

Q: he rate of conduction of an action potential along a nerve fiber is affected by a range of things.…

A: Introduction Nerve conduction:- It is an electrochemical process, Conduction of nerve impulse occurs…

Q: Which of the following primarily reflects the opening of voltage-gated Na* channels? A. The resting…

A: Voltage-gated Na+ channels are gated, meaning that they can be opened or closed in response to…

Q: Answer the following questions in regards to voltage-gated channels in the neuron: a. What is the…

A: The neurons are the functional units of the nervous system that helps in sensory and motor…

Q: increases the probability of producing an action potential, where a ________ decreases the…

A: Depolarization increases the probability of producing an action potential, where a hyperpolarization…

Q: Which of the following is NOT an example of communication that happens from one neuron to another…

A: Answer: - Option a - Endocrine signalling (ex. hormones secreted into the bloodstream travel and…

Q: Which of the following statements is true of electrical synapses? i. They require voltage-gated…

A: The junction between one neuron to the next neuron is known as synapse and depending upon the…

Q: What is the conduction velocity of the action potentil in a myelinated axon of the nerve cell?

A: The conduction velocity is the speed in which electrochemical impulse propagates down a neural…

Q: Select one: a. increased amount of ATP b. movement of chlorine down its concentration gradient c.…

A: Introduction  Information is transmitted via neurons. They communicate between various brain regions…

Q: Use what you know about the physiology of neurons to answer the following questions. Treat questions…

A: Resting membrane potential is a state in which normally the neuron remains in, when there is no…

Q: Select ALL statements that are TRUE regarding a drug that would inactivate the enzyme…

A: A drug that inactivates the enzyme called acetylcholinesterase is known as Acetylcholinesterase…

Q: Action potential conduction velocity is more rapid in a myelinated axon than an unmyelinated one…

A: The myelinated and unmyelinated nerve fibers are the two types of nerve fibers.  Myelin is a fatty…

Q: True or False a. When they are at rest, neurons are more positively charged inside than outside the…

A:

Q: Which of the following statements accurately defines epineurium?   A. Fluid-filled space at a…

A: The peripheral nervous system(PNS) is composed of nerves that connect the peripheral organs to the…

Q: During the depolarization phase of an action potential, the permeability of the plasma membrane toa.…

A: Depolarization influence the membrane to attain the threshold potential at which the nerve cell…

Q: What membrane protein of the neuron is responsible for briefly increasing the Na+ permeability of…

A: Ans:- the option is (c)-the voltage gated sodium chennel.

Q: Depolarization and repolarization changes that occur during the action potential are produced by…

A: Introduction: Just neurons and muscle cells are fit for creating an action potential and that…

Q: Which of the following is the plateau stage of the action potential? A. Phase 0 B. Phase 1 C. Phase…

A: The heart is an excitable organ which can spontaneously generate action potentials. There are three…

Q: In a resting neuron, which of the forces listed below will act to push sodium (Na+) ions into the…

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

Q: Ordinarily, a neuron’s trigger zone is activated before any other part ofan axon, so a wave of…

A: Nerve cells are electrically excitable cells that method and transmits information by electrical and…

Q: A local potential will only lead to an action potential if is reached O a. depolarization b. resting…

A: A sudden, rapid, transitory, and spreading change of resting membrane potential is an action…

Q: Temporal summation of excitatory inputs onto a neuron (we will refer to that neuron as Neuron A)…

A: Temporal summation is a process by which the postsynaptic potential of a neuron is integrated…

Q: Which of the following situations correctly illustrates the all-or-none principle? Select one: a. A…

A: The magnitude of the action potential in any nerve fiber is independent of the strength of the…

Q: During the action potential, which of the following activity is LIKELY to occur? Select one: a. Na+…

A: An action potential (AP) occurs in physiology when the membrane potential of a given cell location…

Q: ILLUSTRATE the following and give their function: A. Cross Section of a Nerve B. Cross Section of…

A: The organ system which coordinates the behavior of a person and transports the signals between the…

Q: Which of the following statements relating to depolarization is incorrect? a. it is a reduction in…

A: The central nervous system consists of numerous specialized cells called neurons. The neurons are…

Q: Using cable theory to describe axon conduction would tell us a. the larger the diameter of the axon…

A: In an ion cascades, action potentials move along neuronal axons. Transmembrane pathways near the…

Q: There is a type of toxin found in the liver of the puffer fish that prevents the opening of…

A: Introduction  The neurotoxin tetrodotoxin (TTX) is highly toxic. Its name is derived from the group…

Q: List the membrane potential value that would coincide with the following events: a. Resting…

A: The neurons have the tendency to transmit the physical stimulus in the form of an electrical…

Q: Which of the following allows the cell to recover from hyperpolarization during an action potential?…

A: The transmission of signals across the different regions of the body occurs in the form of…

Q: Which one is correct about the AP conduction velocity of nerve fiber A. Increase of the temperature…

A: Action potential spreads from the region of the sensory neurons that accept the stimuli till the…

Q: Which of the following is true about the conduction of action potentials?

A: Generation of Action potential occurs in the axon. The action potential is generated due to opening…

Q: The made-up drug leakyhose degrades myelin resulting in myelin becoming more porous and therefore a…

A: The longest cell in the human body is called the neuron or nerve cell. This cell transmits the…

Q: Lypically 10 the membrane potential at which a gra mv to 20 mv depolarized both of these.

A: Resting membrane potentials are maintained by 2 differing types of particle channels: the…