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Control of heart rate in Humans

The human heart:

Pumps blood around the circulatory system
Blood supplies tissues with oxygen and nutrients such as glucose, fatty acids and
amino acids
It also removes waste products, such as carbon dioxide and urea, from tissues so that
they don't accumulate and inhibit…

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When exercising ceases, concentration of CO2 in the blood falls, this reduces the activity
of the accelerator pathway and so the heart rate declines.
Adrenaline is secreted in response to stress, excitement, shock or anticipation. The
presence of adrenaline increases heart rate.
Blood pressure is monitored by stretch receptors in…


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