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: Which of the following sentences is NOT correct? A. Axon can branch B. Afferent neurons are…

A: Axons can divide into many branches called telodendria. At the end of each telodendron is an axon…

Q: After the action potential reaches its peak, the potential across the membrane falls toward its…

A: The action potential is defined as the electrical signaling, which occurs in the neuronal cells, due…

Q: If you increase the amount of neurotransmitter in the synaptic cleft, how would you expect the…

A: Neurotransmitter These are defined as the chemical messengers that carry chemical signals from one…

Q: neuron

A: An action potential is triggered by a graded potential that causes the membrane to depolarize until…

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: 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: Which of the following is the most direct result of depolarizingthe presynaptic membrane of an axon…

A: Neurotransmitters refer to the endogenous chemicals, which enable neurotransmission. These are the…

Q: Which of the following is TRUE regarding the absolute and relative refractory periods of the action…

A: The relative refractory period is that the interval of your time throughout that a second action…

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: 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: 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: 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: 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: Which one of these is an example of an excitatory postynaptic potential in a typical neuron? a) A…

A: Introduction EPSPs Are Connected With A Transmitter-induced Increase In The Synaptic Membrane's Na+…

Q: A neurotransmitter called "GABA" decreases the rate of action potential generation in neurons, but…

A: Alcohol binds to the GABA receptor and it decreases the generation of the rate of the action…

Q: Which of the following is a correct statement of the all-or-none principle? Select one: U a. A…

A: The action potential is known to have full response always that means there is no concept of weak or…

Q: I have stimulated a neuron with dopamine for a second followed by treating it with cocaine and…

A: Homeostasis of calcium ions is essential for survival and neuronal function. In the nerve cells,…

Q: the bacterium clostridium tetani produce a toxin called tetanospasmin, the causative agent os the…

A: Inhibitory Post Synaptic Potential is a kind of synaptic potential that prevents the generation of…

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: What is the point A on the graph? Define this term. B) What ions are moving at B on the graph, what…

A: Action potential An action potential is defined as the sudden rise and fall in the membrane…

Q: Which of the following statements is TRUE of the action potential?

A: Sodium –potassium pump is one of the major biochemical pathways leading to critical physiological…

Q: Which one of the following statements about the propagation of the action potential is incorrect? O…

A: The action potential is any shift in the membrane potential due to an increase or decrease of…

Q: After the depolarisation phase of an action potential, the resting potential is restored by ______.

A: Introduction An action potential is defined as a sudden fall or rise in the potential of the…

Q: You are recording from two neurons in order to characterize the synapse that connects them. When the…

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

Q: Which of the following is/are NOT associated with the cnidarian nervous system?    A. Nerve net B.…

A: Cnidaria It is a phylum kingdom Animalia. It constitutes about 11,000 species of aquatic animals…

Q: a. ng the charge of a neuron b. Changing the polarity of a neural membrane c. Initiating the…

A: A nerve impulse is the way nerves communicate with one another, these are usually the electrical…

Q: During a relative refractory period of an action potential   A. Another action potential can be…

A: Action potential (AP) is the mode through which a neuron transports electrical signals. It is…

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: Which of the following is NOT a true statement? Action potentials are generated only when a neuron…

A: There are few important points that should be kept in mind: Neurons possess electrical excitability…

Q: Neurotransmitters must pass from an axon terminal to the next dendrite by crossing a fluid-filled…

A: Neurons facilitate communication in the brain. A neuron is made up of dendrites (receives…

Q: The equilibrium potential for K* in neurons is ordinarily nearest- A. the equilibrium potential for…

A: The correct option is B - resting potential

Q: Which of the following statements concerning synapses is FALSE? O A) Modulation of synaptic strength…

A: The transmission of signal/information between neurons takes place through spaces known as synaptic…

Q: Use Figure Q1(b) of an action potential to answer questions (1) until (iv) below. Choose the correct…

A: Nerve impulse refers to an electrical or chemical signal that is transmitted along  a fibre. The…

Q: Nerve membrane hyperpolarization after an action potential a)Is the movement of membrane potential…

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

Q: A laboratory experiment is set up where you have two fully functional nerves properly aligned so…

A: When there is a rapid rise and then fall in the membrane potential or voltage across the membrane of…

Q: In which of these ways does a metabotropic synapse differ from an ionotropic synapse? a. Its effects…

A: The binding of neurotransmitters activates the ionotropic and metabotropic membrane-bound receptors.…

Q: Which of the following statements about hyperpolarization are correct? Pick all that apply to what…

A: Hyperpolarisation is an event that occurs in neurons during the action potential.

Q: Post-synaptic acetylcholine receptors are blocked by   A.Calcium ions B.Atropine  C.Nerve gases…

A: Acetylcholine is the chief neurotransmitter of the parasympathetic nervous system that controls the…

Q: Botulinum toxin is a neurotoxic protein produced by the bacteria Clostridium botulinum. Botulinum…

A: Toxins produced by botulinu Clostridium botulinu is a Gram-positive, anaerobic, rod-shaped,…

Q: The transmission of action potentials down a myelinated axon is faster but "saltatory" because of…

A: Saltatory conduction is the propagation of action potentials along myelinated axons from one node of…

Q: Which of the following statements about the intensity of a nerve response is true? Select one: a. A…

A: Third, the frequency of action potentials is used by nerve cells to code the strength of…

Q: Match the description with the statement that best describes the following neural circuits. a single…

A: Neural circuits are groups of neurons interconnected by synapses to carry out a specific function…

Q: Sympathetic splanchnic nerves are composed of A. preganglionic sympathetic axons that synapse in a…

A: The autonomic nervous system is the nervous system that controls the involuntary organs of the body.…

Q: During saltatory conduction, action potentials are generated: a. along the entire length of the…

A: A neuron is the functional unit of the nervous system. Neurons are excitable cells that transmit…

Q: Ganglia are ... a) ... collections of nerve cell bodies outside the CNS b) ... part of a nerve cell…

A: Ganglia are ovoid designs containing cell assemblages of neurons and glial cells upheld by…

Q: Let’s examine a neural pathway that involved three (3) neurons in sequence: one propagates an action…

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