"After an action potential has just passed through the axon hillock, the voltage-gated Na+ channels there won t open for a period of time. However, if the stimulus is strong enough, another action potential can be triggered even during this resting time. This refers to" refractory resting period intermediate resting period relative refractory period absolute refractory period o000

Q: Why do voltage-gated sodium channels have three states (open, closed, refractory/open-block)? Select…

A: The refractory period is the time during which a second action potential cannot be initiated &…

Q: The refractory period goes from "absolute" to "relative" when:   The inactivation gate of Na+…

A: Introduction: When the stimulus strength reaches at least reach the strength of threshold, there is…

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: 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: +30 mV Threshold Potential Resting Potential Time Question: In the abnormal action potential (bottom…

A: Action potential  The excitation of neurones by the action of stimulus generates action potential.…

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: 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: Which of the following occurs immediately after the peak of an action potential? The membrane…

A: Change in electrical potential related with the impulse entry along the membrane of a muscle cell or…

Q: For a nerve fibre axoplasmic and extracellular ion concentrations were found to be respectively:…

A: An equilibrium environment should be maintained both inside and outside the cell to function…

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: 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: When ionotropic receptors allow the influx of ions, the postsynaptic cell depolarizes. When they…

A: The neurons are the cells of nervous system that has the conducting capability. The nerve impulse…

Q: The sum of will dictate whether or not a neuron fires an action potential. Neurotransmitters…

A: Neurotransmitters are the signaling molecules that are released by presynaptic neurons into the…

Q: LA. Action potential +40 Falled Threshold -55 initiations Resting state -70 Stimulus t Refractory…

A: Generation of nerve impulse in nerve fibre depends on distribution of sodium and potassium in and…

Q: Predatory cone snails are beautiful (picture below), but deadly - they release a cocktail of toxins…

A: The neurons have the capability of generation of action potential and also transferred this action…

Q: Which is TRUE about neuronal membrane electrical and concentration gradients at the peak of the…

A: An action potential is sudden and transient changes in the voltage across a biological membrane. It…

Q: Which of the following describes the movement of the correct ion in the falling phase of the action…

A:

Q: Which neuron will conduct impulses most rapidly? Neurons with large diameter unmyelinated axons…

A: Neurons are the basic building blocks of the brain and nervous system; they are the cells that…

Q: Axon segment depolarized to threshold AP regenerated in adjacent axon segment Voltage-gated Na*…

A: A neuron or neural cell is the structural and functional unit of the nervous system. These cells…

Q: In the resting state, before or long after an action potential occurs, the activation gates of…

A: Voltage-gated Na+ channels have three main conformational states: closed, open and inactivated.…

Q: Threshold is the minimum depolarization needed to________ Repolarize the membrane Open voltage-gated…

A: Neurons are the structural and functional unit of the nervous system that have the capability to…

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: A typical intracellularly recorded nerve action potential approximates 80 mV. Why were the recorded…

A: Action potentials captured outside of the cell differ significantly from those captured inside. It…

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: A nerve impulse travels faster in small myelinated fibers large myelinated fibers large unmyelinated…

A: Answer : large myelinated fibres. - at the speed of 179-268 miles per hour.

Q: A presynaptic axon neurotransmitter acts to increase the postsynaptic neuron's permeability to…

A: Nerve cells are excitable cells whose principal function is to cause propagation of electrical…

Q: Indicate which gate is responsible for halting the rising phase of the action potential.  1- Na+…

A: Action potentials are the electrical impulses that are responsible for transmitting information…

Q: The potential difference that must be met in order for an action potential to be generated When the…

A: Action potential An action potential is defined as an electric impulse that travels down through a…

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: Match the stages of action potential with the appropriate image or description.   PICK AND MATCH…

A: Action potential is defined as the rapid depolarization and repolarization of the membrane…

Q: What effect would you expect an antagonist that targets the voltage sensing domain of perisynaptic…

A: Introduction  A neuron is a specialized cell that is the fundamental unit of the nervous system. It…

Q: What is the difference between an action potential and a synapse? (select all that apply)

A: A characteristic pattern of quick rise and subsequent fall in voltage or membrane potential across a…

Q: viour Choose ] His neurons will be incapable of graded potentials It will take larger-than-usual…

A: Voltage gated potassium ion channels are transmembrane channels that play a very important role…

Q: During the patellar reflex, you measure voltage change in the flexor muscle motor neuron cell body…

A: The L2, L3, and L4 spinal cord segments are tested by the patellar reflex, also known as the knee…

Q: Matching (may not use al choices; may use some choices more than once) Sección 79. Site of action…

A: The communication of neurons with each other take place with the help of brief electrical signals…

Q: The conduction velocity in nerves is primarily dependent on the O localization of the Na+ / K+ pumps…

A: Nerve conduction velocity (CV) is an important aspect of nerve conduction studies. It is the speed…

Q: Reorder the items below to correctly label the numbers in the diagram. -55 2 Time (msec) | EPSPS,…

A: The signals are transmitted from one neuron to another through neurotransmitters. The…

Q: At which point in the graph do voltage-gated potassium channels open? (Base your answer to this…

A: The action potential refers to the sudden changes in the resting membrane potential of the neuron…