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Describe the synaptic transmission of a nerve impulse at the neuromuscular junction

As an action potential arrives at the presynaptic terminal, a depolarisation of the motor neuron membrane occurs which initiates the opening of voltage-gated Ca²⁺ion channels - releasing Ca

Answered by Adam B. • Biology tutor

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How do I form the pluperfect subjunctive?

In Spanish, the pluperfect subjunctive (pluscuamperfecto de subjuntivo) refers to an action in the very distant past, much like the pluperfect indicative (había/habías...-ado/ido). However, the s...

Answered by Michael W. • Spanish tutor

3561 Views

What are the three main factors that affect metallic bonding?

A metallic bond is the electrostatic force of attraction between the positive metals ions and the delocalised electrons. The three main factors that affect the strength of a metallic bond are: the number ...

Answered by Rafay S. • Chemistry tutor

49238 Views

What is parliamentary sovereignty?

Sovereignty means legal supremacy. So parliamentary sovereignty is a legal theory which stipulates that the supreme law-making authority in the UK is the Westminiter Parliament. This is evident by three p...

Answered by Rafay S. • Government and Politics tutor

5604 Views

How should I answer an A-Level History exam question?

The best way to structure a History essay is usually thematically. For example, if a question is framed such as 'How successful was the Civil Rights Movement in America?' you should divide your essay in...

Answered by Jenny S. • History tutor

20434 Views