A microelectrode delivers a current pulse that depolarizes the presynaptic terminal above threshold. Describe the events...

A microelectrode delivers a current pulse that depolarizes the presynaptic terminal above threshold. Describe the events that occur (in molecular detail) immediately after depolarization. Your answer should finish with the response of the postsynaptic neuron. The presynaptic neuron releases ACh and the postsynaptic neuron has ionotropic AChR.

what channels are activated in terminal?

what currents flows through the membrane? What direction? Why?

what are all the proteins involved in the release of ACh vesicles?

mechanism?

Expert Solution

gladiator answered 7 months ago

Describe, in order, the events that occur to transmit an electrical signal from a presynaptic neuron...

Describe, in order, the events that occur to transmit an electrical signal from a presynaptic neuron to either a postsynaptic neuron or a muscle cell.

What happens as a result of Ca++ ion flow at a presynaptic terminal? (draw it out..it...

What happens as a result of Ca++ ion flow at a presynaptic terminal? (draw it out..it may help) a) synaptic vesicles migrate to the plasma membrane and release acetylcholine. b) acetylcholine is passively transported from the presynaptic neuron. c) acetylcholine is actively transported to the postsynaptic neuron. d) ligand-gated sodium channels open. e) sodium ions diffuse into the cell. Which of the following statements is true? Metabolic pathways ____________. a) occur in a controlled series of chemical reactions b) are controlled by enzyme...

How do things get from the neuronal cell body to the presynaptic terminal, and vice versa?...

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Describe the events that take place when the action potential spreads throughout the axon terminal leading...

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(e) In the steady state and above threshold, why will the gain and carrier density inside...

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Which of the following correctly describes the sequence of events that occurs once a neuron’s threshold...

Which of the following correctly describes the sequence of events that occurs once a neuron’s threshold for forming an action potential is reached? A. Sodium enters the neuron, followed by potassium leaving the neuron. B. Sodium enters the neuron at the same time that potassium leaves the neuron. C. Potassium enters the neuron, followed by sodium leaving the neuron. D. Potassium enters the neuron at the same time that sodium leaves the neuron Please explain the answer in 200 words...

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