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How is heart rate controlled?

It can be controlled by hormonal or neuronal (from the nervous system) input. To increase the heart rate, during a fight or flight situation for example, adrenaline may be released from the adrenal glands an...
GM
Answered by Grace M. • Biology tutor
6629 Views

Explain the advantages of being a franchisee

Tips: When a keyword is mentioned in the question, it is advised to start your answer by defining that keyword or concept (you would usually get a few marks for this) . In this case, start your answer by def...
SG
3479 Views

Explain the series of events at a synapse between 2 neurons.

An impulse travels along the pre-synaptic neurone, and when it reaches the axon ending it stimulates calcium channles to open on the pre-synaptic membrane. This allows calcium ions to rush into the neurone c...
JL
Answered by Jim L. • Biology tutor
4324 Views

(French Revolution) How successful was the terror in destroying counter revolution in the years 1792-1795?

The terror enforced in 1793 was designed to stabilise the French government by removing counter-revolutionary threats. This was partly successful, with the crushing of the risings in the Vendeé and Rouens, m...
MS
Answered by Megan S. • History tutor
12065 Views

What are the four conditions for life on planet earth?

Availability of water; appropriate temperature range; suitable ambient gases; sunlight
AB
5813 Views