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How does the heart pump oxygenated blood around the body?

Blood that has been used up by the body (deoxygenated) enters the right side of the heart via a large vein known as the superior vena cava. It enters the right atrium from the top, which then contracts and p...
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Answered by Amber M. • Biology tutor
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What is a common harmonic device used in Classical Orchestral music?

Clear harmonic structure is used. The melody strays little from its main purpose and most key changes are heavily related.
Answered by • Music tutor
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What are the two types of waves and what are some of their uses/sources?

Transverse: Radio signalsElectromagnetic radiationTVPhone serviceOcean waves Longitudinal: Seismic wavesSound wavesect.
Answered by • Physics tutor
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What is the general formula for Hydrocarbons?

Hydrocarbons have Hydrogen-Carbon bonds and carbon-carbon bonds. The formula is H n C 2n+2 This is made clear when diagrams are drawn from different hydrocarbons and you can deduce this general formula.
Answered by • Chemistry tutor
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Explain how blood glucose level is controlled.

Blood glucose level is controlled by two hormones, insulin and glucagon. These are produced by the pancreas. If the blood glucose (sugar) level is too high, then insulin is released. This causes glucose in t...
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Answered by Amy W. • Biology tutor
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