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Explain how blood glucose concentration is controlled in the body

When high levels of glucose in the blood are detected, insulin is released from beta cells in the islets of Langerhan in the pancreas.Insulin then binds to insulin receptors of cells, which causes an increas...
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Answered by Hannah H. • Biology tutor
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During large heart attacks the chordae tendineae can be damaged. Use your knowledge of the heart’s structure and the diagram below to to explain how damage to these structures may lead to backflow of blood from the right ventricle to the right atrium.

The heart is a muscular pump. It can be divided into 4 chambers: 2 atria and 2 ventricles. Each atrium is connected to its ventricle by a small opening. This opening is covered by a valve, which guards the e...
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Answered by Eleanor M. • Biology tutor
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How important is the Cabinet? (UK politics)

Intro= The Cabinet is a committee of the leading members of government, and it comprises of between 20-25 members, most of whom are secretaries of state and are responsible for running Whitehall departments....
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What are Circles of attention?

Stanislavski used circles of attention as an acting technique to aid characterisation. all three are achieved through FOCUS and CONCENTRATION The first circle involves concentrating on the self, it provides ...
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Answered by Georgina V. • Drama tutor
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Solve the simultaneous equations x^2+y^2=1 and x+2y=1

x=1,y=0 or x=-3/5,y=4/5
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Answered by Rosie P. • Maths tutor
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