• What protein creates membrane potential? • How can action potentials be expedited? • Do neurons...

• What protein creates membrane potential?

• How can action potentials be expedited?

• Do neurons always produce an action potential when they recieve input?

Expert Solution

gladiator answered 1 year ago

Understanding: How do neurons communicate? Explain: a. action potentials b. rate coding.

The following question regards action potentials and neurons: 1.) A.) How is the physiology different for...

The following question regards action potentials and neurons: 1.) A.) How is the physiology different for an excitatory synapse vs. an inhibitory synapse? Consider neurotransmitter differences, ion channel differences, and how they affect the potential of the post synaptic cell B.) (3 points) How is an electrical gradient produced across a gradient? How is this related to having a membrane potential? C.) (4 points) A) Describe negative feedback in physiology. B) How is negative feedback important for maintaining homeostasis? D.)...

Graded potentials may: W. initiate an action potential. X. depolarize the membrane to the threshold voltage....

Graded potentials may: W. initiate an action potential. X. depolarize the membrane to the threshold voltage. Y. hyperpolarize the membrane. Z. be called EPSPs or IPSPs. Select one: a. if only W, X and Y are correct b. if only W and Y are correct c. if only X and Z are correct d. if only Z is correct e. if all are correct COULD YOU EXPLAIN NOT JUST THE CORRECT ANSWER BUT THE REASONS FOR ALL PLS

what role do a membrane channels play in action potential? What are the key events in...

what role do a membrane channels play in action potential? What are the key events in an action potential?

Define resting membrane potential and action potential (1 point). Why is the resting membrane potential negative...

Define resting membrane potential and action potential (1 point). Why is the resting membrane potential negative and close to the K+ equilibrium potential when cells are at rest, and then positive and closer to the equilibrium potential of Na+ when activated (4 points).

Describe how graded potentials are regulated and how they regulate action potential firing. In your answer,...

Describe how graded potentials are regulated and how they regulate action potential firing. In your answer, specifically identify where on a neuron each event occurs.

At the peak of an action potential, the membrane potential of a human motor neuron reaches...

At the peak of an action potential, the membrane potential of a human motor neuron reaches about +30mV. What value for “alpha”, the ratio of PNa/PK, allows this to occur. Use an online calculator/simulation to find a value for alpha that approximates what happens to reach this membrane potential, and write out the entire GHK equation (the version with just sodium and potassium) that can produce this membrane potential, including normal ion concentrations and temperature.

What are the stages the membrane potential goes through during an action potential? Describe each stage...

What are the stages the membrane potential goes through during an action potential? Describe each stage in terms of the changes in sodium and potassium ions inside the cell. Name and describe the two types of refractory periods, and what, if anything would make a neuron fire during a refractory period.

What determines whether a neuron initiates an action potential? Include the role of resting membrane potential,...

What determines whether a neuron initiates an action potential? Include the role of resting membrane potential, threshold, sodium, graded potentials, and the axon hillock. (answer in short answer pragraph form)

Describe the sinoatrial node (SA node) membrane potential and action potential. Describe how these would be affected...

Describe the sinoatrial node (SA node) membrane potential and action potential. Describe how these would be affected by: 1) atropine, 2) norepinephrine, and 3) acetylcholine

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