The Na+/K+ pump is important for ________ in neurons. A) the depolarizing phase of the action potential B) the repolarizing phase of the action potential C) establishing myelination D) establishing the resting potential E) generating ATP

Q: c) Draw a diagram indicating how the ion concentrations will change during the repolarization phase…

A: All cells generate an electrical potential known as membrane potential across the plasma membrane.…

Q: Which of the following is comparable to a positive feedback cycle? a) opening of voltage-gated Ca2+…

A: The positive feedback mechanism is responsible for the increase in the output, as the amplification…

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

A: The neurons have the capability of generating and transmitting nerve impulses throughout the body.…

Q: neuron

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

Q: A common feature of action potentials is that they(A) cause the membrane to hyperpolarize and then…

A: Plasma membrane always try to maintain potential difference between the sides of the extracellular…

Q: The approximate protein:lipid ratio in the plasma membrane of a myelin cell is: a) 1:10 b) 3:1 c)…

A: Ans - The approximate protein:lipid ratio in the plasma membrane of a myelin cell is 1:4. (a)  #…

Q: 39. The portion of this tracing that is altered most by the activity of both the sympathetic and…

A: Introduction :  The cardiac muscles make up the complete heart. The heart also contains nodal…

Q: 14) at which voltage do Na+ voltage gated channels open? a) 30mV b) -70mV c) 0mV d) -55 mV

A: Introduction: Since their membranes are polarized, neurons are excitable cells. The neural membrane…

Q: which of these effectors is not directly controlled by the autonomic nervous system? a) smooth…

A: The peripheral nervous system (PNS) is the primary division of the nervous system in humans which is…

Q: In a nerve cell membrane, the ion channels that allow the diffusion of Na+: a) are always open. b)…

A: SODIUM CHANNELS These are the integral membrane proteins that form ion channels, conducting sodium…

Q: 1) When threshold (-55 mV) is reached: a) voltage-gated K+ channels immediately open. b) Na+…

A: Step 1 The membrane potential is the transmembrane electric potential difference measured from…

Q: Let’s say the synapses of a neuron’s dendrites are filled with glutamate-gated channels which, when…

A: EPSP refers to the excitatory postsynaptic potential which is generated as a result of the…

Q: Finally, what will be the effect on the membrane potential if K+ loan move out of the cell?a) K+…

A: The sodium-potassium pump is an important ATP-based pump found in the cell's plasma membrane. The…

Q: what happens when an antagonist binds to an inhibitory neurotransmitter receptor? a) it would…

A: When an antagonist binds to an inhibitory neurotransmitter receptor it would decrease inhibitory…

Q: normally, which of the following will happen after a neurotransmitter binds to its receptor?

A: A neurotransmitter is a signalling chemical released by a neuron and transmitted across a synapse to…

Q: Multi-cell recordings from the human motor cortex can be used to guide a robotic arm. Discuss BCI…

A: The paralysed woman controls her arms mentally. Need to discuss how she controls and what…

Q: myelination of an axon is decreases the speed of actio potential. a) true  b) false

A: The myelinated axon can be compared to an electrical wire (the axon) with protecting material…

Q: a)Explain how the presynaptic cell "knows" when to release its neurotransmitter into the synaptic…

A: Neurotransmitters are often referred to as the body’s chemical messengers. They are the molecules…

Q: Which statement regarding neurotransmission through myelinated and unmyelinated neurons is true?…

A: Myelin sheath is modified plasma membrane that wraps around nerve axon and acts as insulator. The…

Q: Which factors in the establishment of the membrane potential are considered in the Nernst equation?…

A: Resting membrane potential is defined as the electrical potential difference across the cell…

Q: fill in the blank  The repolarization phase of action potentials in neurons is due primarily to…

A: An action potential can be defined as a transitory and propagating change of the resting membrane…

Q: 24) a neuron that has as its primary function the job of connecting other neurons is called a(n)?…

A: The Neurons are data messengers. They utilize electrical driving forces and chemical signs to…

Q: When a neuron is polarized, O a) both positive and negative ions are concentrated inside the neural…

A: The word polarized means that there is a charge difference which is responsible for the occurrence…

Q: If extracellular [Na1] is elevated, how would the resting potential and action potential of a neuron…

A: The nervous framework is a profoundly intricate piece of a creature that facilitates its actions and…

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: The concentration of ions in the chemical environment surrounding the neurons must be tightly…

A: Neurons are the basic structural unit of the nervous system. The concentration around neurons has to…

Q: 12) when K+ voltage-gated channels open, which of the following occurs? a) depolarization  b) both…

A: In that they repolarize activated neurons to their resting state, voltage-gated potassium channels…

Q: Which statement is true regarding the nervous system?  a) Damaged myelin on an axon has no effect…

A: The neurons are responsible for nerve impulse generating and transmitting cells in the nervous…

Q: What would happen if the drug blocked K+ channels instead?

A: The body's systemic functioning is due to the communication between different cells that occur,…

Q: Voltage-gated ion channels on the cell body: a) allow Ca2+ to enter, leading to neurotransmitter…

A: Voltage gated transport – Voltage-gated channels help in the movement of molecules in and out of the…

Q: Is an action potential more or less likely under these conditions? Explain.

A: Here, we are asked to explain the behavior's of an unaffected neuron at its membrane resting…

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: The axon cable model is good to describe: A) Only the re-polarization of the membrane C) The…

A: > Neuronal cable theory-  is a theory that includes assumptions and results relating to the…

Q: c) multipolar neuronsT d) pseudounipolar neurons T hich of the following statements are correct with…

A: Neurons are divided into four major types: unipolar, bipolar, multipolar, and pseudounipolar. All…

Q: What are the roles of membrane fluidity in neuron function with regards to metabotropic mechanism(s)…

A: Neuron: A neuron is a specialized type of cell that is the basic unit of the nervous system. Neurons…

Q: taw a graph representing the changes in membrane potential across the axonal membrane before,…

A:

Q: 1) State whether the property described below is one of electrical synapses, chemical synapses, or…

A: The transmission of nerve impulse from one neuron to the next neuron occurs in synapse that is the…

Q: conduction velocity in an axon depends on which of the following? a) how much myelin the axon has…

A: Conduction velocity in an axon refers to the velocity of the nerve impulse carrying messages from…

Q: In SA nodal cells the upstroke of the action potential: A)is characterized by a substantial…

A: The sino atrial node is the pacemaker of the heart. The cells of the sea node have a particular…

Q: Fill in the blank :- The depolarization phase of action poten:-tials in neurons is due primarily…

A: Over long distance neurons can communicate with each other by generating and sending electricals…

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: Action potentials (APs) are all-or-nothing, nondecremental, electrical potentials that allow an…

A: j) Action potentials (APs) are all-or-nothing, nondecremental, electrical potentials that allow an…

Q: 75 Sympathetic neurons require nerve growth factor (NGF) derived from their targets for normal…

A: In eukaryotic cells, the cytoskeleton plays an important role in maintaining the structure of the…