Which of the following is comparable to a negative feedback cycle? opening of voltage-gated Na* channels in response to a depolarizing graded potential O movement of K through leak channels opening of voltage-gated K* channels in response to a depolarizing graded potential operation of the Na*-K ATPase at rest opening of voltage-gated Ca<" channels in response to an action potential arriving at the axon terminal

Q: Nerve transmission and communication with other neurons. < it restores the membrane potential the…

A: A neuron has three main parts: dendrites, an axon, and a cell body. Neurons are the structural and…

Q: Which refers to the time during which a neuron can undergo an action potential? O the resting…

A: Nervous system is one of the most important system of our body it send and receive information via a…

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: The opening of axonal voltage-gated K+ channels is responsible for which part of the action…

A: Theses channels locate in cell membranes and control transportation of K +ions efflux from and…

Q: Which of the following statements is not true about neurons?   When there is no active nerve…

A: Neurons, specialized cells within the nervous system, play a vital role in transmitting electrical…

Q: Which of the following statements best describes the properties of a myelinated axons?     The…

A: Axons are surrounded by a multilayered protein and lipid covering, called the myelin sheath. Such…

Q: h. Respiratory Membrane: ii. i. Name the structures that form the respiratory membrane. What is the…

A: The respiratory system is formed by a set of organs that perform the function of…

Q: The regulation of neurotransmitters DOES NOT include reuptake of the neurotransmission from the…

A: Introduction Neurotransmitters are the chemical substance which is released at the end of a nerve…

Q: "After an action potential has just passed through the axon hillock, the voltage-gated Na+ channels…

A: Thank you for the question  Answer : If a second action potential can be generated it refers to as…

Q: For each FALSE statement, explain why it is incorrect.

A: The afferent division transmits impulses from peripheral organs to the CNS. The efferent or motor…

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: toxin creates pores that are permeable to Ca2+. Describe its immediate effect on the resting…

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

Q: A neuron receives a series of stimuli that increases the membrane permeability of Na ', but not…

A: The nervous system is one of the vital systems of a body. It is a system of nerves which carry…

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: Potassium flows the cell through leak channels, its gradient. into, down out of , up into , up out…

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

Q: Why does neuronal function require the voltage-gated K+ channels to open more slowly than the…

A: Voltage-gated channels are specialized proteins that are essential for the generation and…

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: 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: Which ion channel is open at the point beyond O? M N K - -55 -70 Membrane potential (mV)

A: K+ leak channels allow K+ ions to travel out of the cell freely according to the concentration…

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: When a nerve sends a message what happens?    sodium flows out and Potassium flows in. sodium an…

A: A nerve impulse is the electric signals that transmits along the dendrites to generate a nerve…

Q: The main function of an axon is to... genreate EPSPs or IPSPs when neurotransmitters bind their…

A: Nervous system involves highly complex part of the animal that controls and co-ordinates the actions…

Q: Which characteristic does not refer to electrical potentials? involve gap junctions are slower by…

A: Introduction  A synapse is the junction between two neurons or between a neuron and a target or…

Q: Which ion channel is responsible for the release of neurotransmitters from the presynaptic neuron?…

A: The synapse or “gap” is the place where information is transmitted from one neuron to another.…

Q: Which of the following is a correct functional match for CGMP? A Opens calcium ion channels Smooth…

A: B-Smooth muscle relaxation cGMP is a typical controller of particle channel conductance,…

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: 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: When is the charge inside a neuron at +40 millivolts? O during the refractory period O during the…

A: A membrane made up of a lipid bilayer with proteins incorporated in it surrounds all animal cells.…

Q: the refractory period limits the number of action .2 potentials that a given nerve cell can produce…

A: The neurons communicate with each other by generating action potentials. An action potential is…

Q: EPSP acilitates depolarization of postsynaptic mem ne by increasing the permeability of the membrane…

A: Answer.    The correct answer is option (d) An EPSP facilitate depolarization of the postsynaptic…

Q: Voltage, Currents, Conductances What do the graphs of voltage, Na* current, K* current, Na*…

A: A nerve impulse is the electric signals that pass along the dendrites to generate a nerve impulse or…

Q: Which of the following best describes saltatory conduction? A process in myelinated axons where the…

A: In contrast to the slow continuous process of depression extending down an unmyelinated axon,…

Q: An inhibitory postsynaptic potential (IPSP) is associated with hyperpolarization a change in sodium…

A: A temporary hyperpolarization of the postsynaptic membrane generated by negatively charged ions…

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: 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: After a neuron fires an action potential, the lon concentration gradients are disrupted, What…

A: The neurons are the nerve impulse generating and transmitting cells in the nervous system. It is…

Q: As the axonal membrane depolarizes during the rising phase of an action potential, the amplitude of…

A: During the rising phase of an action potential, the correct statement is:The amplitude of Na+…

Q: Which of the following statements CORRECTLY describes the function of a component of a reflex arc?…

A: A typical brain circuit that regulates an organism's reflexes is shown by the reflex arc. A sensory…

Q: An influx of positive sodium ions eventually causes closing of the inactivation gates of voltage…

A: When a cell is at a resting state, generally the interior of the cell has negative charge than…

Q: the refractory period limits the number .40 of action potentials that a given nerve cell can produce…

A: Neurons, muscle cells, and endocrine cells exhibit the property of excitability, hence they are able…

Q: Once an action potential reaches a neurotransmitter release site, the release of the…

A: When an action potential reaches the end of an axon terminal, it triggers the opening of…

Q: How do ACh neurotransmitters cause the “second action potential”

A: Acetylcholine is the neurotransmitter of the parasympathetic nervous system that dilates blood…

Q: A membrane potential (Vm) labeled axis on the graph In the graph draw the phases of the action…

A: Introduction  Action potentials, those electrical impulses that go throughout your body, are nothing…

Q: Which of the following situations O None of these result in exten O Compromising the inactivatio…

A: Normally, the cells maintain a negative charge compared to the exterior of the cell. This charge…