What event triggers an action potential?a. Opening of sodium channelsb. Opening of delayed potassium channelsc. High concentration of negative ions outside the celld. Activation of the sodium–potassium pump5. Ordinarily, a neuron’s trigger zone is activated b

Q: 20. are found primarily in the white matter A. myelinated axons B. neuron cell bodies C.…

A: The central nervous system includes the brain and the spinal cord. White matter is located in the…

Q: When a neuron is at rest,_____ . a. it is at threshold potential b. voltage-gated sodium channels…

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

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: Most sensory neurons are: Select one: a. Multipolar and unipo neurons b. Unipolar neurons c.…

A: Neurons display great diversity in size and shape. Structurally, neurons are classified according to…

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: Can you identify the structures of a neuron in Figure 14Aa, b?

A: Neurons are the basic functional unit of the nervous system. These are designed to transfer signals…

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: The myelin sheath is produced around axons in the PNS by (a) ganglia (b) neuron cell bodies (c)…

A: MYELIN SHEATH It is an insulating layer that forms around nerves, including those in the brain and…

Q: Compare and contrast graded potentials and action potentials. What are the functions of graded…

A: In animal cells, the plasma membrane expresses several types of ion channels that participate in 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: Describe the changes in the neuron membrane that occur throughout the course of an action potential.…

A: The action potential is an explosion of electrical activity that is created by a depolarizing…

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: The extracellular sodium [Na+]0 is reduced in the saline bath. Following another current injection…

A: Polar large size molecules (glucose, amino acids) and Ions (Na+, H+,k+, Ca+) can't pass…

Q: At maximal stimulation, much above threshold, how long will it be until an axon fires the next AP?…

A: The action potential is defined as the quick variation in the membrane potential that occurs when a…

Q: During the Refractory period of the action potential, the neuron will: Select one: O a. Not respond…

A: Nerve cells or neurons are excitable cells of nervous system. A typical neuron consists of cell body…

Q: Calcium ions a)Help control the membrane threshold voltage. b)Reduce axon permeability to Na+.…

A: sensory input-afferent information travels from the outside environment to brain environment.

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: are found primarily in the white matter A. myelinated axons B. neuron cell bodies C. unmyelinated…

A: White matter and grey matter are the structural components of brain and spinal cord. White matter is…

Q: An action potential begins when______ . a. a neuron reaches threshold potential b. voltage-gated…

A: Answer is a.) a neuron reaches threshold potential.

Q: The two primary factors that influence the speed of an action potential propagation are axon…

A: The nervous system is an exceptionally complex piece of a creature that arranges its activities and…

Q: A C 18. What kind of potentials can be created at the arrow for A? a. Post-synaptic excitatory…

A: Neurons, also known as nerve cells, send and receive signals from your brain. While neurons have a…

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) What channels are open at 3 if this was recorded on the axon of a sensory neuron? 1. K+ voltage…

A: The term action potential refers to the electrical form of signals which are used for the…

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: 1) What is responsible for returning the cell to its normal resting membrane potential following the…

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

Q: What guarantees that there are unidirectional action potential? A. threshold B. depolarization…

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

Q: When a postsynaptic neuron is adequately stimulated, action potentials develop at the initial…

A: A neuron is a basic functional unit of the nervous system. It is a complex network of specialized…

Q: When an action potential happens: OA Sodium rushes into the cell in the first stage creating…

A: A nerve cell is a specialized cell for the communication to transmit information between neuron…

Q: is it possible for a second action potential to start during the refractory period?

A: The resting membrane potential between the inner and outer side of the neural membrane is balanced…

Q: During the rising portion of the action potential, which ions are moving across the membrane and in…

A: Action potential exhibits the potential difference across the membrane of a neuron.

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: What type of interaction is occurring at the trigger zone between two graded potentials arriving…

A: Action potential : As the signals are passed through the neurons, a massive increase in membrane…

Q: On what part of the neuron are NT receptors typically located?  If the activated NT receptors cause…

A: The correct option is C (action potential).Neurotransmitter receptors are located on the surface of…

Q: Which statement below best describes why action potentials travel in only one direction? O The…

A: Action potential refers to the rise in the electrical activity from a resting state due to an…

Q: Suppose you want to cause the presynaptic terminal of an axon to release its transmitter. How could…

A: Synapse was name given by Sherrington. Synapse is junction between two neurons where information is…

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: Subject: Neurophysiology  Batrachotoxin OPENS Na+ channels.  If this is added to a bath solution in…

A: The membrane potential is a minor differential in electrical charge that exists across the cell…

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: 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: 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: How much of a change in the membrane potential is necessary for the summation of postsynaptic…

A: Resting membrane potential of a cell is the electrical potential difference existing across the…

Q: During the refractory period a) if a neuron reaches threshold the action potential goes to…

A: Neurons are the cells of the nervous system.

Q: a) How does a CAP differ from a single action potential? b) Action potentials are said to be all or…

A: a*A compound action potential (CAP) is a signal from a nerve trunk which is made of  numerous axons.…

Q: The level of depolarization at which an action potential will be triggered is referred to as the…

A: Action potential develops only when the membrane acquires a more positive charge inside.

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: The membrane voltage at the axon hillock is not affected by_ O a. EPSPS b. temporal summation OC.…

A: Hello. Since you have asked multiple questions. We will be able to answer only the first one. for…

Q: What happens when a resting neuron’s membranedepolarizes?(A) There is a net diffusion of Na+out of…

A: The membrane potential is the net voltage on the membrane of a neuron. The difference in the charge…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.